| 1ST Land Trading Limited | Reading | 2022 |
| 1ST Legion Gym Ltd | Leicester | 2019 |
| 1ST Luxury Limited | London | 2025 |
| 1ST Medic Limited | London | 2024 |
| 1ST Mile Ltd | London | 2006 |
| 1ST Mobile Limited | London | 2026 |
| 1ST Mortgage West London Limited | Chipperfield | 2003 |
| 1ST Nails Spa & Beauty Ltd | London | 2019 |
| 1ST Nation Limited | London | 2024 |
| 1ST National Associates Limited | London | 2022 |
| 1ST National Services Limited | London | 2026 |
| 1ST National Solutions Limited | London | 2025 |
| 1ST National Trading Limited | London | 2022 |
| 1ST Natural Limited | London | 2024 |
| 1ST Neon Sign Contractors Limited | Manchester | 1996 |
| 1ST NET International Limited | London | 2025 |
| 1ST Network Limited | London | 2021 |
| 1ST North Limited | London | 2024 |
| 1ST Note Limited | Manchester | 2022 |
| 1ST Option Real Estate Consultancy Ltd | Hounslow | 2015 |
| 1ST Plus Ltd | Ilford | 2022 |
| 1ST Power Limited | London | 2024 |
| 1ST Press Limited | London | 2024 |
| 1ST Quote Fire Limited | Glasgow | 2003 |
| 1ST Red Limited | London | 2024 |
| 1ST REP Holdings Ltd | London | 2025 |
| 1ST Repairs Ltd | Hayes | 2018 |
| 1ST Response Commercial Services Limited | Loughton | 2020 |
| 1ST Response Services Limited | Kelvedon Hatch | 2008 |
| 1ST Run Services Limited | Liverpool 14 6Ue | 2010 |
| 1ST Security Ltd | Sawbridgeworth | 2019 |
| 1ST Selection Ltd | Morden | 2016 |
| 1ST Self-Storage (Kings Lynn) Limited | Ely | 2022 |
| 1ST Self-Storage Limited | Littleport | 2018 |
| 1ST Services Limited | Derby | 2023 |
| 1ST Silver Limited | London | 2024 |
| 1ST Source Limited | London | 2026 |
| 1ST South Limited | London | 2024 |
| 1ST Sovereign Ltd | Gillingham | 2024 |
| 1ST Star Group Ltd | Huddersfield | 2022 |
| 1ST Start Services Limited | London | 2026 |
| 1ST Step Wills & Trusts Limited | Sandwich | 2019 |
| 1ST Stop Services Limited | Harlow | 2015 |
| 1ST Strike Ltd | Chichester | 2023 |
| 1ST Systems Limited | London | 2026 |
| 1ST Tech Limited | London | 2022 |
| 1ST Time School of Motoring Ltd | Dartford | 2014 |
| 1ST UK Security Response Ltd | Newton Abbot | 2022 |
| 1ST UK Traders Limited | London | 2025 |
| 1ST Utility Ltd | Mildenhall | 2025 |
| 1ST West Limited | London | 2024 |
| 1ST World Limited | Derby | 2022 |
| 1ST World Services Limited | London | 2026 |
| 1ST World Systems Limited | London | 2022 |
| 1ST. Consultancy Limited | Manchester | 2023 |
| 1ST. Data Limited | London | 2026 |
| 1STARPROMOTION Ltd | Preston | 2018 |
| 1STCHOICE Company Formations Ltd | London | 2018 |
| 1STCURVE Ltd | Southend On Sea | 2019 |
| 1STNET.AI Ltd | Leicester | 2026 |
| 1STOP4AGP Ltd | Bellshill | 2020 |
| 1STRREGE Limited | Banbury | 2025 |
| 1TD Limited | Birmingham | 2021 |
| 1UMMAH Your Community Ltd | Southampton | 2022 |
| 1UP Gaming World Ltd | Ongar | 2024 |
| 1YELIR Ltd | Liverpool | 2024 |
| 2 & 3 Northwood Gardens Management Limited | Bath | 2009 |
| 2 AC Properties | London | 2009 |
| 2 AS One Ltd | London | 2015 |
| 2 BE Beautiful Limited | Hemel Hempstead | 2011 |
| 2 Beloved Limited | Waterlooville | 2021 |
| 2 Below Limited | Flint | 2021 |
| 2 Bridges Canines Ltd | Bristol | 2019 |
| 2 BRO Construction Ltd | Wednesbury | 2019 |
| 2 Bros BB Ltd | Harpenden | 2025 |
| 2 Brother Barbers Ltd | Falkirk | 2021 |
| 2 Brothers HCW Ltd | Barking | 2024 |
| 2 Budds Ltd | Southport | 2019 |
| 2 Build Logistics Ltd | Bramley | 2018 |
| 2 Build Productions Ltd | Bramley | 2018 |
| 2 Chairs Grooming Room Ltd | London | 2022 |
| 2 Counties Training Ltd | Nottingham | 2017 |
| 2 Cresswell Gardens Freehold Limited | London | 2018 |
| 2 Fast 4 YOU Ltd | London | 2022 |
| 2 Feet 4 Paws Ltd | Ruislip | 2020 |
| 2 FLY Aero Group Limited | Wokingham | 2015 |
| 2 Friends Barber Shop MK Ltd | Milton Keynes | 2025 |
| 2 Frognal NW3 RTM Company Ltd | London | 2015 |
| 2 Gak's Limited | Leytonstone | 2012 |
| 2 Guys Top CUT Ltd | Glasgow | 2024 |
| 2 Hans Limited | London | 2013 |
| 2 International Ltd | London | 2025 |
| 2 J'S Property Ltd. | Alexandria | 2016 |
| 2 Keep Active Limited | Brentwood | 2020 |
| 2 M Recruitment Ltd | London | 2023 |
| 2 Marshmallows Limited | Dalkeith | 2020 |
| 2 Medway Road Ltd | Gants Hill | 2013 |
| 2 N 3 Spa Centre Limited | Walsall | 2024 |
| 2 New Life Limited | High Wycombe | 2024 |
| 2 Nine 10 Ltd. | Plymouth | 2018 |