If you’re planning a new website and Umbraco has caught your attention, you’ve made a smart choice. This open-source CMS strikes the perfect balance: robust enough for enterprise-scale systems, yet intuitive enough to keep your team sane.

London is home to some of the UK’s most skilled Umbraco development companies, each with a proven ability to transform complex requirements into clean, high-performing digital platforms. Whether you’re a fast-growing startup or an established enterprise needing deep integrations-with CRMs, e-commerce engines, or custom APIs-these companies deliver with precision and agility.

In this guide, we highlight the standout Umbraco development companies in the capital, chosen for their technical depth, reliable delivery, and real-world results. Let’s explore the partners that can bring your vision to life.

 

1. OSKI Solutions

We’re OSKI Solutions, maintaining a strong London presence through dedicated client leads and project coordination, so we’re always in sync with the capital’s fast-paced business pulse while our expert developers deliver from a streamlined setup. We partner with London teams on Umbraco projects that go beyond basic sites-starting with deep dives into your real goals, crafting smart content models and seamless integrations that put editors in full control without tech headaches.

Umbraco on .NET is our forte for London’s e-commerce, fintech, healthcare, edtech, logistics and SaaS clients. We deliver dynamic forms, secure logins, CRM/ERP connections, payment flows and AI features in C# or Python, all running smoothly on Azure or AWS with React frontends. For Umbraco development agencies and direct London clients, we bring in-person strategy when it counts, crystal-clear delivery and true partnership—plus proactive post-launch support and scaling that grows with you.

Key Highlights

• London client access with coordinated remote development
• Umbraco paired with .NET for seamless extensions
• Cloud integration using AWS and Azure
• Full-cycle from UI design to ongoing support

Services

• Umbraco CMS development
• Custom .NET solutions
• Cloud architecture and DevOps
• Frontend builds with React or Vue
• AI and automation add-ons

Contact Information

• Website: oski.site
• Phone: +48571282759
• Email: contact@oski.site
• Address: Kaupmehe tn 7, 10114 Tallinn, Estonia
• LinkedIn: www.linkedin.com/company/oski-solutions

 

2. Mentor Digital

Mentor Digital operates as a full-service digital agency with offices in Bristol and London, focusing on end-to-end digital projects that blend creative and technical elements. The agency handles everything from initial planning and wireframing to full CMS builds, often partnering closely with clients to refine ideas through testing and iteration. Backend developers and creative specialists work alongside account managers to ensure projects align with broader digital needs, like marketing or video elements, across various sectors from large corporations to nonprofits.

In the Umbraco space, the agency serves as a Gold Partner, drawing on years of hands-on work with the platform for custom builds, maintenance, and extensions. This setup allows for flexible editing experiences and integrations that fit specific workflows, without locking into rigid templates. It's the kind of approach that keeps things straightforward for ongoing tweaks, especially for organizations juggling multiple digital touchpoints.

Key Highlights

• Full-service setup covering UX, design, and software in one place
• Umbraco Gold Partner status with focus on bespoke extensions and server support
• Works across UK clients in diverse fields like FTSE 100 firms and charities
• In-house teams for video production and digital marketing to round out projects

Services

• Web and software development
• CRM integration and development
• UX and design
• Branding and creative
• Video and animation
• Digital marketing

Contact Information

• Website: www.mentordigital.co.uk
• Phone: 0117 305 8900
• Email: info@mentordigital.co.uk
• Address: The Clubhouse, Holborn Circus,  20 St. Andrew Street, London, EC4A 3AG
• LinkedIn: www.linkedin.com/company/mentor-digital
• Facebook: www.facebook.com/mentordigital

 

3. Moore-Wilson

Moore-Wilson functions as a creative and digital agency with bases in London and Salisbury, tracing roots back to early web days when it shifted from print design to online builds. The setup evolved to cover a wide array of digital needs, from strategy sessions to hands-on coding, always aiming to match client goals with practical solutions. Developers here handle complex sites for brands, government bodies, and health organizations, often weaving in custom features that stand up to real-world demands.

When it comes to Umbraco, the agency brings certified know-how to the table, building and supporting sites since the platform gained traction. Integrations with CRMs or event systems come naturally, pulling from community packages to avoid reinventing wheels. Support extends to hosting and upkeep for sites from other builders too, making it a steady option for long-haul digital maintenance without the usual headaches.

Key Highlights

• Full range from branding and design to eCommerce and marketing
• Expertise in open-source CMS like Umbraco, Drupal, and WordPress
• Handles one-off projects or ongoing partnerships
• Offices in central London and Salisbury for easy access

Services

• Digital media and web development
• Website support and maintenance
• Creative design and branding
• Search marketing including SEO and PPC
• Digital strategy and usability
• Hosting and mobile solutions

Contact Information

• Website: www.m-w.co.uk
• Phone: 020 73793300
• Email: hello@m-w.co.uk
• Address: Third Floor, 11 Slingsby Place, St Martin's Courtyard, Covent Garden, London WC2H 9DA
• LinkedIn: www.linkedin.com/company/moorewilson
• Twitter: x.com/moorewilson

 

4. Novicell

Novicell positions itself as an international digital consultancy, with a London presence alongside spots in Denmark and beyond, emphasizing collaborative projects that span strategy to execution. Software developers, strategists, and marketers pull together on solutions that tie into business ops, often starting with a deep listen to client challenges before diving into tech. The focus stays on adaptable digital setups that evolve with user needs, grounded in .NET foundations for reliability.

For Umbraco work, the agency acts as a partner with a track record of agile builds, including their own premium add-ons that speed up common setups. This means sites get tailored without starting from scratch each time, and the community involvement keeps things fresh. It's practical for cross-border teams wanting seamless handoffs, especially where content flows across regions or devices.

Key Highlights

• Blend of software development, strategy, and marketing under one roof
• Umbraco partner with agile methods for quick, smooth rollouts
• International footprint including London for border-spanning projects
• Emphasis on people-first partnerships and result-focused advice

Services

• Software development including Umbraco
• Digital strategy and business consulting
• Creative and UX design
• Marketing and performance optimization
• Full-service digital presence management
• Custom integrations and maintenance

Contact Information

• Website: www.novicell.com
• Phone: +44 (0)20 8144 8142
• Email: hello@novicell.com
• Address: 21-33 Great Eastern Street EC2A 3EJ London
• LinkedIn: www.linkedin.com/company/novicell-uk
• Facebook: www.facebook.com/novicelluk
• Twitter: x.com/NovicellUK
• Instagram: www.instagram.com/novicelluk

 

5. Westhill

Westhill operates out of London's West End as a creative agency that mixes content creation with technical development, pulling in writers, designers, and coders to handle full projects or fill specific gaps. The approach starts with figuring out business goals, then builds out assets like websites, emails, or print materials that align with those aims. This way, everything from social posts to interactive tools serves a clear purpose, making it easier for large UK organizations to coordinate their messaging.

On the web side, front-end and back-end work covers CMS setups, hosting, and user training, with Umbraco in the mix for content-heavy sites needing easy edits. Secure data handling and personalized delivery come standard, which suits clients dealing with member logins or targeted campaigns. The blend of creative and tech keeps revisions in-house, cutting down on back-and-forth for brochure-to-digital workflows.

Key Highlights

• Full-service from copywriting and design to web builds and animations
• Offices in Fitzrovia for central London access
• Handles print, digital, and motion graphics in one workflow
• Focus on purposeful content that ties to client objectives

Services

• Website design, build, and testing
• Content management systems
• Copywriting for websites, emails, and print
• Animations and interactive assets
• Web hosting and maintenance
• Branding and event collateral

Contact Information

• Website: www.westhill.co.uk
• Phone: 0207 631 0274
• Email: hello@westhill.co.uk
• Address: 38 Charlotte Street, London W1T 2NN
• LinkedIn: www.linkedin.com/company/westhill
• Instagram: www.instagram.com/westhillcomms

 

6. FINN Partners

FINN Partners functions as a marketing and communications agency with a London office among many locations, emphasizing strategy and storytelling to shift how brands connect with audiences. Practitioners draw on sector-specific experience to guide campaigns, from positioning to lead tracking, often weaving in social impact angles. Collaboration happens across specialized units, ensuring senior input on accounts without layering extra management.

While Umbraco isn't a core focus, the agency incorporates CMS platforms into broader digital strategies, supporting web presences that align with marketing goals. This includes content delivery and analytics setups that feed into larger narratives. It's suited for brands wanting integrated comms where web work supports PR or advocacy efforts, keeping technical builds in service of the bigger message.

Key Highlights

• Combines creativity with industry-specific communications
• Network covers key cities with local market affiliates
• Values-driven setup with focus on collaboration and impact
• Senior practitioners handle oversight on projects

Services

• Integrated marketing and communications
• Brand positioning and storytelling
• Digital strategy and lead generation
• Content creation and campaign management
• Analytics and performance tracking
• Stakeholder engagement

Contact Information

• Website: www.finnpartners.com
• Phone: +44 20 7046 8200
• Address: 1st Floor ‑ Bentima House 168-172 Old Street London EC1V 9BP
• LinkedIn: www.linkedin.com/company/finn-partners
• Facebook: www.facebook.com/finnpartners
• Twitter: x.com/finnpartners

 

7. Fifteen Design

Fifteen Design works out of Nottingham with account handlers in London and other spots, putting together web projects that mix user-focused layouts with solid backend code. Clients get input on strategy early, like competitor checks or customer insights, then move into designs that aim for clear navigation and search-friendly setups. The process loops in tracking from the start, so tweaks happen based on actual visitor behavior rather than guesses.

Umbraco fits into their CMS options for sites needing flexible content handling, especially where marketing campaigns tie directly to page updates. Hosting and upkeep come as part of the package, keeping things running without separate contracts. It suits businesses wanting one point of contact for design through to ongoing SEO or PPC adjustments.

Key Highlights

• Full-service from strategy and UX to development and marketing
• Account support in London alongside Nottingham base
• Tracks results to guide ongoing site improvements
• Handles bespoke builds with focus on commercial goals

Services

• Website design and development
• Digital marketing including SEO and PPC
• Brand strategy and graphic design
• Hosting and maintenance
• Social media and email marketing
• User experience optimization

Contact Information

• Website: www.fifteendesign.co.uk
• Phone: 0203 903 2049
• Email: london@fifteen.co.uk
• Address: 81 Rivington Street, Shoreditch, London, EC2A 3AY
• LinkedIn: www.linkedin.com/company/fifteen-design
• Facebook: www.facebook.com/FifteenDesign
• Twitter: x.com/fifteenagency
• Instagram: www.instagram.com/fifteenagency

 

8. Vsourz

Vsourz started in London and now runs offices across continents, building digital setups that range from simple sites to full SaaS platforms for travel operators. The work often pulls in AI for workflow automation or predictive tools, layered onto composable backends that swap parts as needs change. Projects stay tied to business metrics, with advice on how tech choices affect operations or revenue streams.

Umbraco appears in some portal builds where content needs to flow across channels without heavy recoding. Embedded squads handle scaling, plugging into client processes for faster launches. This cross-border setup works for companies needing consistent delivery whether the focus is ecommerce, apps, or marketing funnels.

Key Highlights

• Covers AI, SaaS, and composable systems for various sectors
• London headquarters with support in multiple regions
• Delivers embedded units for aligned project pacing
• Experience across web, mobile, and marketing integration

Services

• AI and machine learning systems
• Ecommerce and portal development
• Design and UX journeys
• Digital marketing and campaigns
• Mobile app creation
• System integration and scaling

Contact Information

• Website: www.vsourz.com
• Phone: +44 020 3372 5711
• Address: 307 Euston Rd, London NW1 3AD
• LinkedIn: www.linkedin.com/company/vsourz-agency
• Facebook: www.facebook.com/vsourz.agency
• Twitter: x.com/vsourz_agency
• Instagram: www.instagram.com/vsourz.agency

 

9. PureNet

PureNet focuses on ecommerce and portal work from its UK base, crafting solutions that connect online fronts to backend systems for retailers and manufacturers. Builds often include complex links to ERPs or CRMs, built on platforms that handle high order volumes without breaking. The approach leans on proven integrations to keep processes smooth as businesses expand channels.

Umbraco powers some multisite setups, like for listed companies wanting unified branding across divisions. Click-and-collect features or B2B ordering portals show up in case studies, tailored to specific trading needs. It fits organizations aiming to streamline multi-channel sales with one cohesive digital backbone.

Key Highlights

• Specializes in enterprise ecommerce and custom portals
• Handles B2B and B2C with deep system connections
• Umbraco multisite for expanded digital footprints
• Works with high-street names and industry leaders

Services

• Ecommerce platform development
• Bespoke portal creation
• Systems integration
• Web design and UX
• Conversion-focused solutions
• Multi-channel support

Contact Information

• Website: www.purenet.co.uk
• Phone: 0208 819 1620
• Email: sales@purenet.co.uk
• Address: 344-354 Gray's Inn Road London WC1X 8BP
• LinkedIn: www.linkedin.com/company/purenet
• Facebook: www.facebook.com/purenetsolutions
• Twitter: x.com/PureNet

 

10. IDS Logic UK

IDS Logic UK positions itself as a digital solutions provider based in Leeds, working with agencies and businesses to handle tech needs from planning to upkeep. The setup covers a broad spread of projects, like tying together CRMs with ecommerce fronts or setting up LMS platforms that fit specific training flows. This often means starting with a look at current ops to spot where custom code can cut down on manual work, keeping things integrated without overcomplicating the stack.

Umbraco comes into play for CMS builds where content needs to update easily across sites, paired with testing that checks everything from load times to security gaps. Support runs around the clock, which helps for quick fixes on live apps. It's the sort of arrangement that lets smaller outfits lean on external expertise without building in-house capacity right away.

Key Highlights

• Covers ecommerce, CMS, and mobile from one end to the other
• Umbraco for flexible content handling in multisite setups
• Testing includes web, mobile, and integration checks
• Partnerships with agencies for white-label project delivery

Services

• Ecommerce development and maintenance
• CMS development including Umbraco
• Mobile app development for Android and iOS
• Learning management systems
• QA and testing services
• Custom software development
• AI integration and automation

Contact Information

• Website: www.idslogic.co.uk
• Phone: +44 (0)1135 316 314
• Email: info@idslogic.co.uk
• Address: Meet IDS Logic@Westhill, 38 Charlotte Street, Fitzrovia, London, W1T 2NN
• LinkedIn: www.linkedin.com/company/ids-logic-uk
• Facebook: www.facebook.com/idslogic
• Instagram: www.instagram.com/idslogic

 

11. Intuitiv

Intuitiv runs near the Buckinghamshire-Oxfordshire line, close enough for London commutes, handling web projects that go from basic brochure sites to full ecommerce platforms. The in-house hosting network ties directly into development, so sites launch with performance tweaks baked in from the start. Developers here focus on user-friendly interfaces that scale, often iterating based on feedback to avoid common pitfalls like clunky navigation.

Umbraco gets used for CMS needs where editing stays simple yet powerful, ideal for startups adding features as they grow. Case studies show work on e-learning tools or content hubs that stay secure and responsive. With a stable crew sticking around, the handoff feels smooth, less like a vendor switch and more like an ongoing collab.

Key Highlights

• Owns hosting setup for tailored performance
• Builds from brochure sites to complex ecommerce
• UK-based developers with user experience input
• Long-term client relationships shape project flow

Services

• Web design and development
• Umbraco CMS implementation
• Ecommerce platform creation
• Hosting and infrastructure management
• User experience consultancy
• Secure site maintenance

Contact Information

• Website: www.intuitiv.net
• Phone: 01844 888 777
• Email: hello@intuitiv.net
• Address: 2 Bridge Road Ickford, nr Thame Buckinghamshire HP18 9HX
• LinkedIn: www.linkedin.com/company/intuitiv
• Facebook: www.facebook.com/intuitiv
• Twitter: x.com/intuitivltd

 

12. i3 Digital

i3 Digital spreads across London, Belfast, and spots in the US and Ireland, pulling together design and dev for enterprise-level web apps that link up with backends seamlessly. The process digs into user flows early, then layers on integrations that keep data moving without hitches, all tested against standards like ISO for quality and security. This setup suits orgs wanting one partner for the full stack, from UX wireframes to cloud hosting.

Umbraco ranks among the CMS choices for projects needing strong integration hooks, often alongside Kentico or Sitecore for bigger deployments. Support covers 24/7 monitoring, which catches issues before they snowball. Straight talk on timelines keeps expectations real, especially for rescues on stalled builds.

Key Highlights

• Multi-location offices for cross-region projects
• ISO-certified processes for quality and security
• Handles Kentico upgrades and Umbraco integrations
• Focus on user-centric design with robust testing

Services

• User experience design
• Web application development
• Enterprise CMS and DXP including Umbraco
• eCommerce solutions
• Cloud hosting and support
• Search engine optimization
• Accessibility compliance

Contact Information

• Website: i3digital.com
• Phone: +44 (0) 207 459 4313
• Email: london@i3digital.com
• Address: 3 Lower Thames Street London
• LinkedIn: www.linkedin.com/company/we-are-i3
• Facebook: www.facebook.com/wearei3
• Twitter: x.com/wearei3
• Instagram: www.instagram.com/wearei3

 

13. ClerksWell

ClerksWell keeps its main office in central London, backed by a tech hub in Derby and development groups in India, putting together digital projects that span websites, apps, and internal systems. The workflow starts with user needs and business aims, then moves into CMS builds or ecommerce setups that hook into CRMs without loose ends. Accessibility checks and ongoing tweaks keep sites compliant and running smooth, which matters for orgs spread across regions.

Umbraco stands out in their CMS lineup for flexible, open-source sites that editors handle without constant dev help. Specialists pick the right platform - Umbraco, Sitecore, or Optimizely - based on what fits the job, not a one-size approach. Security stays baked in, with ISO standards guiding every step, so data handling never feels like an afterthought.

Key Highlights

• Central London base with Derby and India support
• Umbraco Platinum Partner for custom CMS work
• Covers ecommerce tool integration and audits
• ISO 27001 certified for security practices

Services

• CMS development including Umbraco
• Ecommerce implementation and optimization
• Design and user experience services
• CRM integrations
• Support and maintenance packages
• Accessibility audits

Contact Information

• Website: www.clerkswell.com
• Phone: 020 7689 8800 
• Email: hello@clerkswell.com
• Address: The Print Rooms, 164-180 Union Street, London, SE1 0LH, United Kingdom
• LinkedIn: www.linkedin.com/company/clerkswell
• Twitter: x.com/ClerksWell_Ltd
• Instagram: www.instagram.com/clerkswell_digital

 

14. Wattle

Wattle focuses on membership groups, rolling out a platform called MemEx that ties together CRM, websites, and member portals on Microsoft tech. The setup handles everything from acquiring new members to daily ops, using Umbraco for the web layer where content needs to stay fresh and connected to backend data. Projects follow a phased plan to keep risks low, especially for associations juggling events or certifications.

Umbraco serves as the CMS backbone for sites that pull member info in real time, cutting down on duplicate entry. Support continues after launch, with fixes and upgrades to match growing user bases. This works well for trade bodies or institutes wanting one system instead of patched-together tools.

Key Highlights

• MemEx platform built on Microsoft stack
• Umbraco for membership website development
• Phased approach to digital transformation
• Works with trade associations and charities

Services

• Digital transformation consulting
• Website development with Umbraco
• CRM implementation on Dynamics 365
• Member portal creation
• System integrations
• Ongoing support and maintenance

Contact Information

• Website: www.wearewattle.com
• Phone: 0117 9717547
• Address: 32 Threadneedle Street London EC2R 8AY
• LinkedIn: www.linkedin.com/company/wattle-solutions-ltd
• Twitter: x.com/wearewattle

 

15. 26 DX

26 DX operates as part of a larger marketing group, crafting digital experiences that link brands to customers through data and creative tech. The scope runs from research and strategy to full builds and lifecycle management, often for big names needing consistent delivery across markets. Partnerships with CMS providers keep options open for composable or headless setups.

Umbraco fits into some projects where .NET flexibility matters, sitting alongside Kontent or other platforms depending on the brief. B Corp status shapes decisions, pushing for responsible builds that balance impact and results. It's a solid pick for brands wanting end-to-end work without splitting creative and technical phases.

Key Highlights

• Part of MSQ with focus on digital transformation
• Partners with .NET CMS including Umbraco
• Handles data intelligence and strategic research
• B Corp certified for responsible practices

Services

• Digital experience design
• CMS and DXP development
• Data and analytics integration
• Technical delivery and lifecycle management
• Creative and UX services
• Global execution with local adjustments

Contact Information

• Website: 26-dx.com
• Phone: 0800 320 2626
• Email: hello@26-dx.com
• Address: 34 Bow Street London WC2E 7AU
• LinkedIn: www.linkedin.com/company/26dx

Conclusion

Picking the right Umbraco partner in London comes down to finding someone who gets your actual day-to-day headaches, not just the shiny brochure stuff. You want folks who can turn a messy content backlog into something editors love using, without turning every update into a dev ticket. The agencies here all lean into Umbraco’s flexibility in their own ways-some keep it lean for quick wins, others layer on heavy integrations when the data gets complicated. Either way, the proof is in how smoothly the site runs six months later when the launch hype dies down.

At the end of the day, schedule a call, kick the tires on a small feature, and see who actually listens. London’s got enough talent that you don’t have to settle for generic CMS factories. Find the ones who treat your project like it’s their own backend, and you’ll sleep better when the traffic spikes.