Moving to the cloud is easy to start and hard to finish well. Spinning up a first server or moving a first application can take an afternoon, but migrating a working business, with its databases, integrations, security obligations and people, is a project that can run for months and shape your costs for years. The right partner plans the move, keeps the business running during it, and stays on to automate and support what you have built. The wrong one hands over a half-finished environment and an invoice, and leaves your own team to work out what was actually built.

This list compares ten UK cloud migration and DevOps consulting companies on what they offer, how they work and what their clients say. It is written for IT leads, operations directors and founders who need to build a shortlist rather than read ten sales pages. Some firms here are cloud-platform specialists, some are managed IT providers that have added migration to a broader service, and some are engineering consultancies whose DevOps practice sits alongside software delivery. Those differences matter more than any single rating, so each entry says what the firm appears to be best at and what to check before you approach it. Use the list to narrow your options, then ask two or three firms for a scoping call. Whether you need cloud migration services in London or a DevOps consulting company that can run your pipelines around the clock, start with the entries below.

What Cloud Migration and DevOps Consulting Actually Involve

Migration Strategies

Cloud migration is not one activity. It is usually described through a handful of strategies, and a good provider will say which one applies to each system. Rehosting, often called lift-and-shift, moves an application with few changes. It is quick, but it rarely saves much money on its own. Replatforming makes small adjustments so the application can use managed services such as hosted databases. Refactoring changes the code or architecture so the application is built for the cloud. It costs more up front, but it pays back in resilience and scalability. Some systems are rebuilt or replaced with a software-as-a-service product, and some are retired altogether. Most real projects mix several of these, which is why the assessment stage matters so much.

DevOps Practice

DevOps is the working practice that keeps a cloud environment healthy once it exists. It joins development and operations around automated delivery pipelines, known as CI/CD, which stands for continuous integration and continuous delivery. It also relies on infrastructure defined as code, so environments can be rebuilt on demand. Monitoring shows problems before customers do, and security checks sit inside the pipeline rather than being added at the end.

Without these habits, a migrated business often ends up with a more expensive version of its old data centre. The manual changes and fragile releases stay the same, but now they are billed monthly. For that reason, many buyers look for a single partner, or a closely coordinated pair, that can handle both the move and the engineering practices that follow it.

Ongoing Operation

The third piece is ongoing operation. Managed cloud services typically cover round-the-clock monitoring, patching, backup and disaster recovery, cost control and security response. Providers sell this in three common ways. You can buy a one-off migration project that ends at handover, a project followed by a managed service, or a managed service for an environment someone else built.

Decide early which of the three you want, because it changes who you should shortlist. A firm that is excellent at delivering migrations may not want to run your environment for years. Likewise, a strong managed service provider may be less suited to a complex application rewrite.

How We Chose these Companies

Every company here has a UK headquarters, lists cloud migration, managed cloud or DevOps services on its own website, and has client reviews on Clutch. We took services, certifications and pricing details from each company’s own site and Clutch profile in November 2026, and we mark claims a company makes about itself as self-described. Certifications and partner levels in particular come from the companies’ own pages, so confirm them with the issuing body or ask for the certificate before you rely on them.

The order reflects how closely a firm’s work matches cloud migration and DevOps, plus the depth of its reviews. A firm with a handful of reviews can rate highly on Clutch without that rating being a reliable signal, so we flag thin review bases where we found them. Nobody paid for a place. Genius Logix is our own company and is listed first, so treat that ranking as ours rather than independent, and read its entry with the same scepticism you would apply to any firm describing itself. Ratings change, so check each profile before you decide.

1. Genius Logix

Genius Logix is a UK software and cloud consultancy founded in 2023 that covers the whole journey from build to support with one team. Its work spans custom software and ERP integration, AI engineering, consultancy and architecture, migration and modernisation, and managed operations and security. A recent cloud migration case study moved a regulated law firm, Sovereign Solicitors, off a legacy on-premises data centre to managed cloud without disrupting casework, and left a disaster recovery plan behind it. Teams planning a legacy to cloud migration can start with a free consultation, followed by a clear proposal.

The natural fit is an organisation that wants one accountable team across application work, migration and operations rather than three separate suppliers. That model reduces hand-offs, but it also concentrates risk in one relationship, so it is worth asking how the firm would hand the environment to another provider if you ever chose to leave. Being founded in 2023, it has a shorter track record than most firms on this list, which makes references and evidence of comparable projects more important rather than less.

The law firm case study is relevant mainly because regulated clients cannot tolerate downtime during live work. If your own systems carry similar constraints, ask how cutover was sequenced, what recovery targets were set for the new environment, and how the disaster recovery plan was tested. The same questions are worth putting to every firm on this list.

2. Deployflow

Deployflow is a Bracknell-based DevOps and cloud company that offers cloud migration, cloud consulting, DevOps managed services, CI/CD automation and DevSecOps managed services. It lists partnerships with Microsoft Azure, AWS and Google Cloud and describes itself as ISO 27001 and Cyber Essentials Plus certified. Its Clutch profile shows a 5.0 rating and a two-week sprint approach, which suits teams that want DevOps as a service with a steady delivery rhythm.

Two things stand out. The first is that DevOps is the centre of the offer rather than an add-on, so it is a sensible starting point for teams whose main problem is slow or error-prone releases rather than a single large data centre exit. The second is the multi-cloud partnership list, which suggests it can work across AWS, Azure and Google Cloud, useful if you have not committed to one platform or already run workloads on more than one.

A sprint-based way of working suits organisations comfortable with agile delivery, where scope is reviewed every two weeks. If you need a fixed price and a fixed end date for a one-off move, ask how Deployflow scopes that, and how it handles work that spills over from one sprint to the next.

3. Lambert Labs

Lambert Labs is a London consultancy that focuses on Amazon Web Services. Its services cover AWS cloud migrations, modernisation, managed services, consulting and cost optimisation. Its website shows AWS Advanced Tier services partner status, ISO 27001 and Cyber Essentials Plus. It holds a 4.9 rating on Clutch from nine reviews, which makes it a strong fit for businesses that already know they are moving to AWS.

Specialising in one platform is a real advantage when that platform is the right one for you. A team that works on AWS every day tends to know its pricing quirks, its security tooling and the common design mistakes, and that knowledge shortens projects and lowers running costs. The flip side is that a single-platform firm has little reason to tell you that Azure or Google Cloud would suit your workloads better, so settle the platform question before you speak to it.

Cost optimisation is listed as a service in its own right, which is worth probing. Ask whether it reviews your bills after go-live, how often, and whether the saving it finds is reported to you in writing. Cloud spending commonly drifts upwards in the first year, and a provider that watches it is more valuable than one that only builds.

4. Digitalis.io

Digitalis.io is a London firm, founded in 2015, that builds and runs open-source data platforms alongside DevOps and site reliability engineering. Its services include CI/CD and infrastructure as code, architecture reviews and a 24×7 fully managed service, with data engineering on Cassandra and Kafka. It displays ISO 27001 and Cyber Essentials badges and has a 5.0 Clutch rating from six reviews. It is a good DevOps consulting company to shortlist for data-heavy platforms. test

This is a more specialised proposition than a general migration provider. Cassandra is a distributed database built for large volumes of data across many servers, and Kafka is a streaming platform used to move events between systems in real time. Firms that run these well are rare, and they are most relevant to businesses with high-volume data, such as payments, telemetry or large customer platforms. If your estate is mainly office applications and file servers, a generalist managed provider will probably be a better match.

The architecture review is a useful low-commitment way to test any firm of this kind, because it produces a written assessment you can keep whether or not you continue. Ask what the review covers, how long it takes, and whether the findings are yours to take to another supplier.

5. Texaport

Texaport is an Edinburgh managed service provider with offices in Glasgow, London and Manchester. Its cloud services page lists Azure and AWS managed services, cloud migration, cost optimisation, and disaster recovery and backup, backed by 24/7/365 support. Founded in 2012, it has a 4.9 Clutch rating from 14 reviews. Pricing is quote-based, so expect to request a proposal.

A managed service provider is a different kind of partner from a project consultancy. The relationship is built around continuing support: a service desk, monitoring, backups and a defined response when something fails. Texaport’s spread of offices across Scotland and England may matter if you want a supplier within reach of more than one region, and its mix of Azure and AWS services means it is not tied to a single platform.

Because pricing is by quote, the useful comparison is the contents of the proposal rather than the headline figure. Look at what is included in support hours, how incidents are prioritised, what the response times are, and what charges apply outside the standard service. Two quotes that look similar can differ widely once exclusions are read.

6. Transputec

Transputec is a London managed IT provider founded in 1986. Its cloud services cover 24/7 cloud management, cloud migrations (lift-and-shift, replatform and refactor), cloud security, disaster recovery as a service and AWS managed services. It lists AWS Advanced Tier Services Partner and Microsoft Solutions Partner status, along with ISO 27001, ISO 9001, ISO 14001 and Cyber Essentials Plus. Clutch shows a 4.7 rating from 20 reviews, the deepest review base on this list, which suits larger organisations that want cloud migration managed services from an established provider.

Longevity and review depth are its strongest signals. Nearly four decades in business and 20 Clutch reviews give you more evidence to weigh than most firms here, and the 4.7 rating is more reliable because of the sample size, even though it is lower than some smaller firms’ scores. A slightly lower average across many reviews is often a better indicator than a perfect score from a few.

Its migration descriptions name lift-and-shift, replatform and refactor, which mirrors the standard strategies and suggests a structured approach. The ISO standards listed cover information security (27001), quality management (9001) and environmental management (14001). For a larger organisation with procurement requirements, that range of accreditations can simplify supplier approval, but ask for current certificates and their scope.

7. Virtuoso Tech

Virtuoso Tech is a London managed IT provider, founded in 2011, that focuses on Microsoft Azure. Its managed cloud page lists Azure management, cloud migration consulting and delivery, public cloud application migration, private and hybrid cloud infrastructure, and 24×7 Azure monitoring. Azure management is charged as a percentage of consumption. It holds a 4.9 Clutch rating from nine reviews and is worth a look for hybrid cloud migration on Azure.

Hybrid cloud means some workloads stay in a private environment, whether on your own premises or in a hosted one, while others run on the public cloud, with the two connected. It is a common end state for organisations with systems that cannot move yet, for reasons of latency, licensing or regulation, so a provider that handles private, hybrid and public environments can plan a staged path rather than forcing everything across at once.

The pricing model deserves attention. Charging management as a percentage of consumption is common, and it aligns the provider’s fee with your usage, but it also means the fee rises as your cloud bill rises. Ask how the percentage changes with volume, whether there is a minimum, and what incentive the provider has to reduce your spending.

8. Instil

Instil is a Belfast software engineering consultancy founded in 2005. Its Clutch profile lists cloud migration and modernisation, bespoke software development and developer training, and describes the firm as an AWS Select Consulting Partner and ISO 27001 accredited. Its own website now leads with AI-driven product engineering, so confirm its current cloud scope before you approach it. Clutch shows a 4.9 rating from 11 reviews and a minimum project size of $50,000.

Instil is the clearest example on this list of a firm where the review profile and the current positioning may not match. The Clutch listing describes cloud work, while the company’s own site emphasises a different direction. That does not make it a poor choice, but it means a direct conversation about whether cloud migration is an active service is a sensible first step rather than an assumption.

The $50,000 minimum project size places it at the higher end of the range on this list, and the combination of software development and developer training suggests a fit for organisations that want to build internal capability alongside the migration. If you have an in-house engineering team you want to upskill, that is a real advantage. If you simply want a hands-off migration, a managed provider is likely to be more appropriate.

9. Atech

Atech is a managed service provider based in Marlow that runs Microsoft Azure, Microsoft 365 and security operations. Its services include Azure infrastructure managed service, cost management and optimisation, managed security and SOC, and Azure Virtual Desktop management. Founded in 2006, it has a 5.0 Clutch rating, but from only three reviews, so ask for references. It fits organisations that want Azure run for them after the move.

The combination of Azure, Microsoft 365 and security operations is a coherent bundle for organisations whose technology is largely Microsoft-based. A security operations centre, or SOC, is the team that watches for threats and responds to them, and having that alongside infrastructure management means one provider can see both the environment and the attacks against it. That can shorten response times compared with splitting the two between suppliers.

The three-review base is the main caution. A perfect score from three clients tells you the experience was positive, but not whether it is typical. Ask for two or three references of similar size and sector, and ask what happened when something went wrong, since how a provider handles an incident says more than how it handles a calm month.

10. Compete366

Compete366 is a London Microsoft cloud consultancy, founded in 1998, that advises UK small and medium-sized businesses on Azure and Microsoft 365. Its services include Azure consultancy, planning and managing cloud migration, Azure Virtual Desktop advice and SharePoint file migration advice. Clutch shows a 4.7 rating from three reviews, all dated 2021 or earlier, so ask for recent client references. We found no DevOps services on its site, so it fits migration projects only.

Its focus on small and medium-sized businesses is a point in its favour for smaller buyers, who can find that larger providers prioritise bigger accounts. A consultancy that works mainly with firms of your size is more likely to scope a project realistically and to explain it without jargon. SharePoint and file migration is a practical, common need that many general providers treat as an afterthought.

The age of its reviews and the absence of DevOps services are the limits. If you need automated pipelines or infrastructure as code, look elsewhere on this list. If you need a well-planned Microsoft cloud move and little else, it can be a reasonable fit, provided recent references confirm the service is as good now as the older reviews suggest.

How to Compare Cloud Migration and DevOps Providers

Start with platform fit. If you have already chosen AWS or Azure, a specialist will usually know the platform more deeply than a generalist. If you have not chosen, favour a firm that works across platforms and will recommend against its own preference.

Next, read certifications for what they actually show. ISO 27001 indicates a documented information security management system. Cyber Essentials Plus adds hands-on technical verification of basic cyber controls. Cloud partner tiers reflect a relationship with the platform vendor. None of these guarantees a good project, but every one should be verifiable on request.

Then get security responsibility in writing. The platform vendor secures the underlying infrastructure, while you, or the provider acting for you, are responsible for configuration, access control and data. For DevOps work, ask how the provider measures results, for example against the DORA delivery measures. Ask for a baseline at the start and a review at agreed intervals.

Finally, plan the exit before you sign. Ask who owns the infrastructure code, documentation and accounts, and what handover support applies if you leave.

Our Top Pick for Cloud Migration and DevOps

Our pick is Genius Logix for organisations that want one accountable team across the whole journey, from migration and modernisation through to managed operations and security. It is our own company, so weigh this as a stated preference rather than an independent verdict.

The reasons are practical. A single team removes the hand-offs that often cause problems between a migration supplier and an operations supplier. Its law firm case study shows experience with a regulated client that could not afford disruption to live casework. Its free consultation followed by a clear proposal also lets you test the fit before committing. The caveat is its 2023 founding, which means a shorter track record, so ask for references.

If your priorities differ, Transputec has the deepest review base on this list. Lambert Labs is the stronger choice for a committed AWS move, and Deployflow suits teams whose main need is DevOps delivery.