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Top IT Service Providers for .NET in the UK

457 IT service providers ranked by rating, review volume and listing quality.

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Between them, the 457 IT service providers on this page cover web development (450), PHP (384), web design (365) and IT services (331). They also list work in United States of America. 457 of them have written a profile you can read before you get in touch.

We list more than 450 IT service providers in the UK listed for .NET development. The order comes from what each firm publishes and what has been verified about it, never from payment — at the top right now: Your Dev Team, Abbacus Technologies and Digijuice.

Before you shortlist, check

  • Work on current .NET versions, not only legacy .NET Framework
  • A plan for moving any old .NET Framework code forward
  • Automated tests and deployment you can run yourself
  • That you own the code and the build pipeline
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Only businesses that have told TrustList match a filter. Filters never change the order or a score.

  1. N

    NerdPeople

    Mobile App Development · Web Development · Web Design

    We are NerdPeople, a 360° digital agency and a one-stop-shop for all your digital needs.

    Write a review

For vendors

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The order is earned: ratings, verified reviews and listing quality decide it, and nobody can pay to move up. There are two ways to stand out, and each one says what it is.

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  • We check your registration, your website and your clients
  • Approved listings show the Verified badge here and on their profile
  • It earns a rank number and counts towards the TrustList Score; renewed yearly
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Sponsor the .NET ranking

Paid · always labelled

  • A Sponsored card above the .NET ranked list
  • Marked Sponsored, and it never changes the order
  • Booked by the month; cancel any time
Book a spotSee prices

How is this ranking worked out?

The order comes from what each firm publishes and what has been verified about it, and never from payment:

  • Profile completeness: the details a buyer needs to judge a firm — what it does, who it serves, how it prices, who it has worked for
  • Earned trust: verification, awards and the other checks a firm has actually passed
  • Client reviews, where they exist: the rating is smoothed, so one five-star review cannot outrank a firm with a hundred good ones, and volume counts with diminishing returns

Client reviews are still rare across this catalogue, so on most lists today the order is set by the first two. A firm near the top is the best-documented and best-verified one we hold, which is not the same claim as the best one to hire. Use the list to build a shortlist, then check the firms yourself.

Sponsored listings are labelled and shown apart from this list. How rankings work

Only firms whose profile names the UK are counted here, so a firm that lists a town but no country is not yet included.

Where else can I look?

The same list elsewhere: USA (714) · India (465) · Germany (222) · Canada (143).

Other specialisms in the UK: UI/UX design (941) · e-commerce (854) · Android app development (812) · iOS app development (800) · WordPress (752).

Every IT service provider in the UK: the full list.

Every category in the UK: the UK country page.

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