Several standout companies in the UK have built strong reputations for guiding businesses through AWS cloud migration projects. These agencies focus on everything from initial assessments and planning to full-scale implementation, helping organisations reduce costs, boost performance, and improve scalability without the usual headaches that come with big tech shifts.

What sets the best ones apart is their deep expertise in tailoring AWS solutions to different industries, whether it's finance, healthcare, retail, or manufacturing. They work closely with teams to ensure data moves securely, applications run efficiently in the new environment, and everything stays compliant with UK regulations throughout the process.

1. OSKI Solutions

OSKI Solutions design, develop, deploy, and maintain well-engineered software solutions for tech-forward enterprises and ambitious start-ups. In the UK market we focus on delivering cloud solutions that help local businesses adapt and grow with flexibility while maintaining security and reliability. Our approach combines modern technologies to support seamless operations and integration needs specific to UK organisations.

We provide cloud services that enable scalability and efficiency for businesses operating in the UK. This allows companies to handle their data with accessibility and performance suited to local demands and regulatory expectations. We work to ensure solutions fit the unique pace and requirements found across UK industries.

Key Highlights:

• Cloud services for scalability and efficiency

• Focus on security and data accessibility

• Support for integration of innovative technologies

• Solutions for reliability and automation

Services:

• Aws cloud migration

• Cloud infrastructure setup

• Cloud optimization

• Cloud security management

• Data migration to cloud

Contact Information:

• Website: oski.site

• Phone: +48571282759

• Email: [email protected]

• Address: Kaupmehe tn 7, 10114 Tallinn, Estonia

• LinkedIn: www.linkedin.com/company/oski-solutions

2. Lambert Labs

Lambert Labs operates as an AWS Advanced Tier services partner based in London. The company brings deep domain expertise with AWS and focuses on helping businesses migrate workloads to the cloud. Their certified experts support clients in building secure infrastructure on AWS while also offering consulting to guide decisions around cloud adoption.

Lambert Labs handles cloud cost optimization projects to refine spending and works on DevOps practices that speed up development cycles. The agency extends into Python and Django development for web applications and APIs along with data engineering tasks. In addition Lambert Labs explores Gen AI solutions on AWS for organizations looking to incorporate newer technologies and maintains a sustainability focus through quality cloud architecture choices.

Key Highlights:

• AWS certified experts ready to assist with migration projects

• Experience across SMB SME startup and enterprise clients

• Commitment to sustainable cloud architecture practices

• Focus on secure and reliable infrastructure builds

Services:

• AWS Cloud Consulting

• AWS Cloud Cost Optimization

• Python and Django Development

• AWS Cloud Gen AI

• AWS Cloud DevOps

Contact Information:

• Website: lambertlabs.com

• Phone: +44 (0) 7491 599 440

• Email: [email protected]

• Address: 210 Old Brompton Road, London, SW5 0BS

• LinkedIn: www.linkedin.com/company/lambertlabs

• Twitter: x.com/lambertlabs

3. Cloud Bridge

Cloud Bridge supports organizations at various stages of their AWS journey from initial setup to ongoing management. The company assists with unlocking AWS funding options that ease migration expenses and helps establish solid foundations early on. Their approach emphasizes visibility across environments so teams can maintain better oversight of resources and usage patterns.

Cloud Bridge works with existing AWS setups to improve cost control and performance without major disruptions to current operations. The agency puts structure and governance measures in place while identifying areas for optimization as environments expand. This allows businesses to scale confidently while keeping full control over their cloud presence.

Key Highlights:

• Assistance for new AWS users and those already operating in the cloud

• Support for reducing upfront migration costs through funding options

• Emphasis on visibility and control in AWS environments

• Focus on continuous optimization as setups grow

Services:

• AWS environment reviews

• Cost and usage control measures

• Governance implementation

• Performance improvement strategies

• Migration planning support

Contact Information:

• Website: www.cloud-bridge.co.uk

• Phone: 01628 965200

• Address: Chiltern House, 49-51 Dean Street, Marlow, SL7 3AA

• LinkedIn: www.linkedin.com/company/cloud-bridge

4. ANS

ANS specializes in AWS migration services that facilitate transitions to the cloud. The company manages moves from on-premises setups to AWS along with database transfers that keep downtime low. Their process includes application migrations at larger scales using automation tools where possible.

ANS also addresses legacy system modernization by incorporating cloud-native elements such as microservices and containers. The agency delivers benefits like improved scalability and cost structures through pay-as-you-go models. Security features and compliance elements receive attention throughout projects while performance tuning helps operations run efficiently.

Key Highlights:

• Expertise in on-prem to AWS workload transfers

• Database migration capabilities with minimal downtime

• Application migration support using automation

• Legacy system updates with modern AWS approaches

Services:

• Performance optimisation

• Database migration

• Legacy system modernisation

• Application migration at scale

• Cost efficiency planning

Contact Information:

• Website: www.ans.co.uk

• Phone: 0800 458 4545

• Address: 1 Archway, Birley Fields, Manchester, M15 5QJ

• LinkedIn: www.linkedin.com/company/ans-group-plc

• Facebook: www.facebook.com/ans.co.uk

• Twitter: x.com/ANSGroup

5. Version 1

Version 1 delivers cloud transformation initiatives that help organizations move forward with their AWS environments. The company addresses business challenges first before applying technology solutions that produce measurable results. Their work includes resilient architectures designed for ongoing innovation and cost management.

Version 1 supports legacy modernization efforts alongside intelligent applications that incorporate AI elements. The agency provides managed services for monitoring and optimization while focusing on data platforms that turn information into usable assets. This approach aims to reduce risks during cloud journeys and accelerate value delivery for clients.

Key Highlights:

• Focus on cloud transformation with resilient designs

• Support for legacy modernisation efforts

• Managed services for monitoring and issue resolution

• Data and AI platform development

Services:

• Intelligent Applications

• ASPIRE Managed Services

• Unified Data and AI

• Enterprise Applications

• Strategy Design and Change

Contact Information:

• Website: www.version1.com

• Phone: +44 203 859 4790

• Address: Waterloo Court, Suites 6 & 7, First Floor, 10 Theed St, London SE1 8ST, United Kingdom

• LinkedIn: www.linkedin.com/company/version-1

• Facebook: www.facebook.com/Version1Group

• Twitter: x.com/version1

• Instagram: www.instagram.com/version1group

6. CGI

CGI provides IT and business consulting support that includes cloud-related projects for UK clients. The company works across multiple industries such as banking, financial markets, central government and utilities. Their services cover advisory work along with managed IT options that help organizations adapt to digital changes.

CGI develops solutions based on intellectual property to speed up innovation processes. The agency maintains a long history in technology delivery since its founding and emphasizes outcome-based approaches in engagements. This setup allows them to assist with various aspects of cloud adoption and management depending on specific business requirements.

Key Highlights:

• Presence across diverse UK industries including finance and government

• Advisory services for IT and business investments

• Managed IT services offerings

• Focus on innovation and operational improvements

Services:

• Business consulting

• Data analytics

• Agile digital services

• Sustainability services

Contact Information:

• Website: www.cgi.com

• Phone: +44 (0)20 7637 9111

• Address: Southmead Road, Filton, Bristol, BS34 7RR

• LinkedIn: www.linkedin.com/company/cgi

• Facebook: www.facebook.com/cgigroup

• Twitter: x.com/cgi_global

7. .NET Developers

.NET Developers supplies dedicated teams that focus exclusively on client projects. The company combines developers of varying seniority levels in their work. Technical expertise supports timely delivery of solutions built within the Microsoft .NET framework using SOLID design patterns.

.NET Developers creates .NET CMS applications on platforms like Umbraco Sitecore and Sitefinity to manage costs. Front-end development incorporates JS frameworks such as React Angular and Vue for web solutions. The agency maintains a straightforward pricing approach and offers development services centered on C# .NET applications.

Key Highlights:

• Dedicated developer teams for individual projects

• C# .NET development with SOLID patterns

• .NET CMS application building

• Front-end development using JS frameworks

Services:

• .NET CMS Applications

• JS framework Front-end development

• C# .NET Development

Contact Information:

• Website: net-devs.com

• Phone: +48 571 282 759

• Email: [email protected]

• Address: Obrzeżna 1D, 02-691 Warszawa, Poland

• LinkedIn: www.linkedin.com/company/net-devs

8. Pulsion

Pulsion delivers custom software development with attention to front-end and back-end technologies. The company also runs quality assurance and testing programs that combine manual and automated approaches. Pulsion explores AI and machine learning applications to handle different data types and improve efficiency in business processes.

Pulsion creates custom mobile apps for iOS and Android platforms that aim for high performance and security. The agency offers options to hire dedicated developers through flexible arrangements. Platform and infrastructure work includes DevOps and security measures to keep applications available and fault-tolerant while cloud migration projects move operations to serverless architectures.

Key Highlights:

• Custom software development for specific business requirements

• Quality assurance through manual and automated testing

• AI applications for data processing across formats

• Mobile app creation with focus on scalability

Services:

• Custom Website Design

• UX/UI Design Services

• Hire Dedicated Developers

• Platform and Infrastructure

Contact Information:

• Website: www.pulsion.co.uk

• Phone: 441413522280

• Email: [email protected]

• Address: 5 Eagle Street, Craighall Business Park, Glasgow, G4 9XA

• LinkedIn: www.linkedin.com/company/pulsion-technology

9. Lemongrass

Lemongrass supports SAP transformation efforts at different stages whether organizations remain on older systems or have moved to newer platforms. The company works with migration to cloud setups and provides advisory input on related data services. Their offerings extend to SAP BTP services and various hyperscaler options including setups on AWS.

Lemongrass maintains an AI-first approach in modernization projects that aims to reduce disruption during transitions. The agency handles data platform migration along with analytics and management tasks. Security and governance receive consistent attention throughout engagements while clean core practices help organize SAP environments.

Key Highlights:

• Support for SAP journeys from ECC to S/4HANA

• AI-driven modernization with focus on outcomes

• Data services including platform migration

• Advisory services across cloud and SAP BTP

Services:

• SAP BTP Services

• Data Services

• Manage

• Innovate

• Secure

Contact Information:

• Website: lemongrasscloud.com

• Phone: +44 808 234 3576

• Email: [email protected]

• Address: 20-22 Queen Victoria Street, Reading, RG1 1TG, United Kingdom

• LinkedIn: www.linkedin.com/company/lemongrass-consulting-ltd

• Facebook: www.facebook.com/LemongrassCloud

• Twitter: x.com/LemongrassCloud

10. Mobilise

Mobilise works as cloud native experts that help enterprises transform services and accelerate digital efforts. The company applies project enablement methods to support organizational improvements and independence in technology projects. Around the clock support comes through site reliability engineers who maintain service operations.

Mobilise augments internal teams during transformation phases so organizations can focus on value creation. Their managed services keep infrastructure stable while digital changes take place. The agency positions itself as an enabler and accelerator for cloud native approaches across various enterprise needs.

Key Highlights:

• Cloud native expertise for service transformation

• Project enablement for organisational improvement

• Site reliability and support for continuous operations

• Team augmentation during digital projects

Services:

• Transformation Acceleration

• Managed services

• Around The Clock Support

Contact Information:

• Website: www.mobilise.cloud

• Phone: 0345 054 2560

• Email: [email protected]

• Address: 1st Floor, One Waterton Park, Bridgend, CF31 3PH

• LinkedIn: www.linkedin.com/company/mobilise-cloud

• Twitter: x.com/MobiliseCloud

• Instagram: www.instagram.com/mobilise.cloud

11. MakeCloud

MakeCloud manages AWS environments for UK businesses so development teams can concentrate on product work. The company handles DevOps practices with CI/CD pipelines and infrastructure as code. Security and compliance architectures receive dedicated attention along with cost management through FinOps methods.

MakeCloud supports generative AI application development using AWS tools from initial concepts to production. Cloud migrations form part of their end-to-end capabilities with assessment and execution phases. Monitoring patching and optimisation run continuously in managed services that aim for reliability and scale.

Key Highlights:

• Management of AWS for growing businesses

• DevOps with automated deployment tools

• Security architectures and compliance frameworks

• Cost management and resource optimisation

Services:

• AWS Managed Cloud Services

• AWS Security & Compliance

• AWS Cost Management & FinOps

• AWS Gen AI

• AWS DevOps

Contact Information:

• Website: www.makecloud.com

• Phone: +44 (0) 20 3637 8933

• Email: [email protected]

• Address: West Common, Harpenden AL5 2JQ, GB

• LinkedIn: www.linkedin.com/company/makecloud-devops-cloud-consultancy

• Twitter: x.com/MakeCloud418

• Instagram: www.instagram.com/makecloud_com

12. Digital Space

Digital Space keeps IT operations reliable while guiding businesses toward practical technology applications. The company addresses workforce connectivity and resilient infrastructure needs. Consultancy and professional services help identify outcomes that align with business priorities.

Digital Space works on customer experience improvements and security compliance measures across networks and cloud setups. The agency focuses on efficient operations by integrating processes and systems. Cost control and sustainable growth receive attention through scalable technology choices that support long-term business development.

Key Highlights:

• Reliable IT operations with forward-looking guidance

• Workforce connectivity solutions

• Resilient infrastructure support

• Security and compliance across environments

Services:

• Customer Experience

• Consultancy and Professional Services

• Workforce Connectivity

• Security & Compliance

Contact Information:

• Website: digitalspace.co.uk

• Phone: 0333 220 0222

• Email: [email protected]

• Address: 3rd Floor (West), Strand Bridge House, 138-142 Strand, London, WC2R 1HH

• LinkedIn: www.linkedin.com/company/digital-space-uk

• Facebook: www.facebook.com/DigitalSpace.co.uk

• Twitter: x.com/digitalspace_uk

13. 21century.tech

21century.tech functions as an AI-native software studio that builds production software with senior engineers paired alongside AI models. The company handles architecture design business logic and code review while AI manages code generation boilerplate and testing. This setup produces MVPs and refactors in shorter timeframes with human oversight on every outcome.

21century.tech follows a process where clients provide briefs and receive daily demos during AI-augmented building phases. Senior engineers make architectural decisions and maintain full ownership of results. The studio deploys production-grade code with CI/CD tests and documentation to client or studio infrastructure.

Key Highlights:

• AI-augmented software development with human review

• Senior engineer oversight on architecture and quality

• Rapid MVP and feature delivery cycles

• Production code deployment with full documentation

Services:

• AI-augmented Development

• Architecture & design

• Code review & QA

Contact Information:

• Website: 21century.tech

• Email: [email protected]

14. Claranet

Claranet acts as a managed services partner that handles cloud cyber security data and AI workplace and connectivity areas. The company offers solutions for cybersecurity to address threats and maintain compliance. Cloud services cover planning adoption management and modernisation of different cloud types.

Claranet supports workplace setups that allow productive work from various locations. Networks and connectivity receive attention for optimisation and modernisation while data and AI efforts help organizations gain control over information flows. The agency works on challenges like cost optimization, pace of change and scalability through combined technology and operational approaches.

Key Highlights:

• Managed services across cloud and cybersecurity

• Solutions for workplace and network connectivity

• Data and AI control for organisational needs

• Support for hybrid cloud environments

Services:

• Cybersecurity

• Workplace

• Networks & Connectivity

• Data & AI

Contact Information:

• Website: www.claranet.com

• Phone: 0330 390 0507

• Email: [email protected]

• Address: 17 Slingsby Place, London, WC2E 9AB

• LinkedIn: www.linkedin.com/company/claranet

• Facebook: www.facebook.com/claranetgmbh

• Instagram: www.instagram.com/claranetuk

15. Alscient

Alscient brings consultants who hold certifications and operate as permanent staff across the UK. The company delivers managed services that assist with cloud and AI paths. Salesforce solutions form part of their portfolio with experience in multi-cloud enterprise setups.

Alscient maintains AWS expertise through partnership status and delivers services that include software and hardware procurement support. The agency tailors comprehensive technology solutions to individual requirements while focusing on innovative approaches that aim for customer satisfaction in digital projects.

Key Highlights:

• Certified consultants located throughout the UK

• Managed services for cloud and AI journeys

• Salesforce multi-cloud enterprise solutions

• AWS partnership with extensive experience

Services:

• Salesforce Solutions

• AWS Expertise

• Managed Services

• Professional Services

Contact Information:

• Website: alscient.com

• Phone: 0113 8000 200

• Email: [email protected]

• Address: Yorkshire House, Greek Street, Leeds, LS1 5SH

• LinkedIn: www.linkedin.com/company/alscient-limited

• Twitter: x.com/Alscient

16. CirrusHQ

CirrusHQ maintains pure focus on AWS and nothing else. The company works with certified solution architects and engineers to balance availability, security and affordability in AWS-hosted applications. Their Acuity Platform provides visibility over costs and simplifies management tasks.

CirrusHQ develops insights from long-term AWS work that help customers achieve transparency in spending. The agency optimises cloud workloads through careful attention to performance and budget considerations. This setup allows businesses to create environments that align with operational requirements.

Key Highlights:

• Exclusive focus on AWS solutions

• Certified architects and engineers for optimisation

• Cost visibility through dedicated platform tools

• Balance of security performance and affordability

Services:

• Managed Cloud

• Cloud Consultancy

Contact Information:

• Website: cirrushq.com

• Phone: 0131 208 0284

• Address: The Alba Campus, Rosebank Way, Livingston, EH54 7GA

• Facebook: www.facebook.com/CirrusHQ

17. N-iX

N-iX delivers pragmatic AI software engineering that connects to cloud data and security infrastructure. The company offers AI-augmented development along with consulting and implementation services. Cloud solutions cover projects across multiple providers including AWS.

N-iX handles software engineering tasks such as application development and legacy modernisation. Data and analytics work includes platform engineering and warehouse updates while AI agent development supports workflow automation. The agency maintains partnerships with major platforms and focuses on measurable engineering outcomes in enterprise settings.

Key Highlights:

• AI software engineering with infrastructure connections

• Cloud solutions across AWS and other providers

• Data platform engineering and analytics

• Software engineering for legacy modernisation

Services:

• AI Consulting and Implementation

• Software engineering

• Data and Analytics

• AI Agent Development

Contact Information:

• Website: www.n-ix.com

• Phone: +442037407669

• Email: [email protected]

• Address: London, EC3A 7BA, 6 Bevis Marks

• LinkedIn: www.linkedin.com/company/n-ix

• Facebook: www.facebook.com/N.iX.Company

• Twitter: x.com/N_iX_Global

18. SoftPro

SoftPro operates as a digital agency with IT experts focused on custom software development. The company uses technologies such as Azure ASP.NET .Net Core and the Microsoft stack for process modernisation. Front-end backend and CMS platform knowledge allows creation of solutions matched to client requirements.

SoftPro delivers cloud development that builds cloud-native applications and manages migration along with infrastructure. Artificial intelligence services cover machine learning, predictive analytics and automation to support decision-making. Web application development produces responsive, secure and scalable apps using modern frameworks while full-stack expertise ensures integration and performance.

Key Highlights:

• Custom software solutions for business needs

• Cloud-native application development and migration

• AI-driven solutions with machine learning

• Web application development with modern technologies

Services:

• Web Application Development

• Artificial Intelligence

• Software Development

• Cloud Development

Contact Information:

• Website: soft-pro.pl

• Phone: +48 571 282 759

• Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciołka St. 401

• LinkedIn: www.linkedin.com/in/kyrylo-o

Conclusion

Picking the right AWS cloud migration company in the UK comes down to understanding where your business stands right now and where you want to head next. Some agencies click better with startups that need quick wins, while others feel more at home with established organisations juggling complex legacy systems. It is worth taking time to chat with a few options and see who actually listens to your specific situation instead of pushing a standard plan.

At the end of the day, a solid migration partner makes the whole process less stressful and more predictable. The UK scene has plenty of capable players who know the local regulations and AWS nuances inside out. Trust your gut after those initial conversations, look at how they explain things in plain English, and go with the one that seems genuinely interested in solving your problems rather than just landing the project.