Top Software & IT Services Companies in the UK
There are 284,987 software & it services companies in the UK. This page breaks that total down the way a list actually gets built — by sub-industry, by location, and by company size — so you can see how big the addressable slice is before you commit budget to a campaign.
Leading software & it services companies
Ranked by employee band. Companies House does not publish revenue, and its employee figures are unreliable, so bands come from verified company profiles.
| # | Company | Website | Employees |
|---|---|---|---|
| 1 | Canonical | canonical.com | 1,001–5,000 |
| 2 | Sophos | sophos.com | 5,001–10,000 |
| 3 | InovAi8 | talentmatched.com | 2–10 |
| 4 | Sage | sage.com | 10,000+ |
| 5 | Photon | photon.com | 5,001–10,000 |
| 6 | K2 Partnering Solutions | k2partnering.com | 1,001–5,000 |
| 7 | Smart Working | smartworking.io | 51–200 |
| 8 | Serco | serco.com | 10,000+ |
| 9 | VOIS | voiscentre.com | 10,000+ |
| 10 | Qualitest | qualitestgroup.com | 5,001–10,000 |
| 11 | Capita | capita.com | 10,000+ |
| 12 | VeriPark | veripark.com | 1,001–5,000 |
| 13 | Endava | endava.com | 10,000+ |
| 14 | Saragossa | saragossa.co.uk | 51–200 |
| 15 | Mastek | mastek.com | 5,001–10,000 |
| 16 | Twine | twine.net | 2–10 |
| 17 | Infobip | infobip.com | 1,001–5,000 |
| 18 | AVEVA | aveva.com | 5,001–10,000 |
| 19 | Ubique Systems | ubique-systems.com | 501–1,000 |
| 20 | Computer Futures | computerfutures.com | 501–1,000 |
| 21 | Computacenter | computacenter.com | 10,000+ |
| 22 | Deliveroo | deliveroo.co.uk | 1,001–5,000 |
| 23 | Halr | halr.ai | 11–50 |
| 24 | mthree | mthree.com | 1,001–5,000 |
| 25 | Builder.ai | builder.ai | 501–1,000 |
| 26 | Micro Focus | microfocus.com | 10,000+ |
| 27 | FDM Group | fdmgroup.com | 1,001–5,000 |
| 28 | Canon EMEA | canon-europe.com | 10,000+ |
| 29 | Civica | civica.com | 5,001–10,000 |
| 30 | Penta Consulting | pentaconsulting.com | 51–200 |
| 31 | QuantumBlack, AI by McKinsey | mckinsey.com | 1,001–5,000 |
| 32 | Travelport | travelport.com | 1,001–5,000 |
| 33 | VTEX | vtex.com | 1,001–5,000 |
| 34 | Accelya | accelya.com | 1,001–5,000 |
| 35 | Abacus | abacus-global.com | 5,001–10,000 |
| 36 | Infinity Quest | i-q.co | 201–500 |
| 37 | Tata Consultancy Services - UK and Ireland | tcs.com | 10,000+ |
| 38 | IRIS Software Group | iris.co.uk | 1,001–5,000 |
| 39 | Infoplus Technologies UK Limited | infoplusltd.co.uk | 501–1,000 |
| 40 | Ciklum | ciklum.com | 1,001–5,000 |
| 41 | Eursap - Europe's #1 SAP Recruitment Agency ⭐️⭐️⭐️⭐️⭐️ | eursap.eu | 11–50 |
| 42 | hackajob | hackajob.com | 51–200 |
| 43 | ConnexAI | connex.ai | 501–1,000 |
| 44 | The Access Group | theaccessgroup.com | 5,001–10,000 |
| 45 | SVM Secure | svmsecure.com | 2–10 |
| 46 | Treatwell | treatwell.com | 501–1,000 |
| 47 | Falcon Smart IT (FalconSmartIT) | falconsmartit.com | 11–50 |
| 48 | PURVIEW | purviewservices.com | 1,001–5,000 |
| 49 | NCC Group | nccgroupplc.com | 1,001–5,000 |
| 50 | PortSwigger | portswigger.net | 51–200 |
Need the full list with verified decision-maker contacts? Book a meeting.
The largest sub-industry is information technology consultancy activities with 131,669 companies, which is where most software & it services outbound in the UK ends up pointed. The tail below it is usually less contested and worth a separate sequence.
Geographically it concentrates in London (82,650 companies), followed by Manchester, Birmingham, Cardiff. If your reps work by territory, that split is the fastest way to divide the list.
By headcount, 55,631 are micro companies of 1–9 people and 2,510 sit in the 10–249 range — usually the sweet spot for outbound, since they are large enough to have a budget holder and small enough that the decision maker answers.
Software & IT Services by sub-industry
| Sub-industry | Companies |
|---|---|
| Information technology consultancy activities | 131,669 |
| Business and domestic software development | 86,783 |
| Other information technology service activities | 56,143 |
| Ready-made interactive leisure and entertainment software development | 7,355 |
| Computer facilities management activities | 3,027 |
| Scheduled air transport | 6 |
| Non-scheduled air transport | 4 |
Where software & it services companies are based
| City | Companies |
|---|---|
| London | 82,650 |
| Manchester | 5,146 |
| Birmingham | 3,498 |
| Cardiff | 3,437 |
| Bristol | 3,140 |
| Leeds | 2,879 |
| Glasgow | 2,830 |
| Reading | 2,748 |
| Milton Keynes | 2,505 |
| Edinburgh | 2,361 |
Software & IT Services by company size
| Employees | Companies |
|---|---|
| 1–9 | 55,631 |
| 10–49 | 2,248 |
| 50–249 | 262 |
| 250–999 | 14 |
| 1,000+ | 12 |
Headcount is published for 85,764 of these companies; the rest are in the database without a size band.
Frequently asked questions
How many software & it services companies are there in the UK?
Our data covers 284,987 software & it services companies in the UK, sourced from Companies House and refreshed continuously.
Can I get decision-maker contacts for software & it services companies?
Yes. Every company record can be paired with verified decision-maker contacts — names, job titles, verified email addresses and direct phone numbers. Book a meeting and we will scope the list against your ICP.
How is the software & it services segment defined?
Companies are classified using official industry codes from the business register, not keyword guesses on company names, so the segment boundaries match what the company actually registered as.