| ARK Corporate Ltd | London | 2024 |
| ARK Creative (UK) Limited | Norfolk | 2005 |
| ARK Creative Limited | Ashford | 2003 |
| ARK Digital Innovation Systems Limited | London | 2010 |
| ARK Digital Media Ltd | London | 2024 |
| ARK Digital Services Ltd | London | 2025 |
| ARK Digitech Ltd | Ilford | 2015 |
| ARK Display Graphics Limited | Leeds | 1997 |
| ARK Earth Limited | Bedford | 2010 |
| ARK Experience Design Limited | London | 2017 |
| ARK Fibre Optics Limited | Bedford | 2013 |
| ARK Film Distribution Ltd | Orpington | 2026 |
| ARK Foundation | Sutton Coldfield | 2016 |
| ARK Gaming Ltd | Chichester | 2022 |
| ARK Global Consulting Ltd | London | 2021 |
| ARK Global Solutions Ltd | London | 2023 |
| ARK Group Private Limited | Cardiff | 2018 |
| ARK Group Scientific Solutions Private Ltd | Edinburgh | 2025 |
| ARK Illustration Limited | Chepstow | 2025 |
| ARK Image Studios Limited | Dartmouth | 2020 |
| ARK Immersive Ltd | Liverpool | 2022 |
| ARK Industries Limited | London | 2018 |
| ARK Infosoft Limited | Sheffield | 2025 |
| ARK Infotech Ltd | Northwood | 2024 |
| ARK Infovision Limited | Reading | 2013 |
| ARK Innovate Limited | Manchester | 2024 |
| ARK Innovations and Technology Ltd | London | 2016 |
| ARK Integrations Limited | Beaconsfield | 2011 |
| ARK Invest International Ltd | Bristol | 2019 |
| ARK Invest UK Marketing Ltd | Bristol | 2025 |
| ARK IT Consultancy Limited | Aberdeen | 2025 |
| ARK IT Services Ltd | Ebbw Vale | 2017 |
| ARK Knowledge Networks Ltd | London | 2025 |
| ARK Management & IT Services Limited | Walsall | 2010 |
| ARK Management UK London Limited | London | 2018 |
| ARK Media Group Ltd | Gillingham | 2018 |
| ARK Media Productions Limited | Sutton Coldfield | 2009 |
| ARK Movies Limited | London | 2023 |
| ARK Networks Ltd | London | 2023 |
| ARK Platforms, Europe Limited | Manchester | 2025 |
| ARK Process Engineering Limited | Hoylake | 2012 |
| ARK Productions Limited | 162-168 Regent Street | 2003 |
| ARK Project Consultants Limited | Ruislip | 2019 |
| ARK Project Partners Ltd | Grays | 2013 |
| ARK Projects Consultants Ltd | Ruislip | 2022 |
| ARK RE Limited | Bradford | 2015 |
| ARK Recording Studios Limited | Saffron Walden | 2001 |
| ARK Scenic Ltd | Woking | 2025 |
| ARK Selection Ltd | London | 2021 |
| ARK Shared Services Ltd | Swindon | 2025 |
| ARK Shaw Ltd | Rainham | 2017 |
| ARK Software Ltd | Epsom | 2020 |
| ARK Software Services Limited | Grays | 2018 |
| ARK Software Solutions Limited | Whitley Bay | 2001 |
| ARK Sound Limited | St. Helens | 2012 |
| ARK Tech Services Ltd | Southend-On-Sea | 2015 |
| ARK Tech Solutions Ltd | Basingstoke | 2016 |
| ARK Tech Systems Ltd | London | 2025 |
| ARK Techno Ltd | Livingston | 2018 |
| ARK Technologies Ltd | London | 2024 |
| ARK Technology Group Ltd | St. Helens | 2021 |
| ARK Technology Ltd | Tonbridge | 2018 |
| ARK Telecom Ltd | Gateshead | 2017 |
| ARK Test Labs Ltd | Cambridge | 2016 |
| ARK Unity Holdings Limited | London | 2024 |
| ARK Venture Studio Limited | London | 2023 |
| ARK Web Limited | London | 2021 |
| ARK Workplace Risk Ltd | London | 1985 |
| ARK23 Ltd | Hoddesdon | 2023 |
| ARK360 Limited | London | 2018 |
| Arka Bloom Ltd | London | 2025 |
| Arka Capital Ltd | Sutton | 2019 |
| Arka Creative Limited | Chertsey | 2025 |
| Arka Fortune Ltd | London | 2024 |
| Arka Global Capital Ltd | London | 2019 |
| Arka Intellect Limited | Newry | 2010 |
| Arka Techi Ltd | Leeds | 2024 |
| Arka Technologies Ltd | Reading | 2018 |
| Arkade Digital Limited | Stoke-On-Trent | 2024 |
| Arkade Limited | London | 2004 |
| Arkadia Publishing Limited | Ruislip, | 2018 |
| Arkadian Ltd | London | 2024 |
| Arkadian Systems Ltd | Hassocks | 2011 |
| Arkado Ltd | Farnborough | 2021 |
| Arkafus Limited | Nottingham | 2024 |
| Arkafy Ltd | Kingston Upon Thames | 2020 |
| Arkah Creations Ltd | East Croydon | 2015 |
| Arkahost Ltd | London | 2020 |
| Arkai Ltd | London | 2026 |
| Arkal Project Ltd | London | 2025 |
| Arkalith Ltd | Peacehaven | 2024 |
| Arkalo Ltd | Hornchurch | 2018 |
| Arkam Ltd | London | 2025 |
| Arkam Omar Films Ltd | Reading | 2022 |
| Arkana NCS Ltd | London | 2004 |
| Arkana Rama Ltd | Preston | 2025 |
| Arkana Works Tech Ltd | London | 2025 |
| Arkance UK Limited | London | 1990 |
| Arkane Security Limited | London | 2025 |
| Arkangel Productions Limited | Edgware | 2016 |