| 10.9 Coaching Ltd | Linlithgow | 2011 |
| 100 Barrington Limited | London | 2019 |
| 100 Platform Ltd | Chipping Norton | 2025 |
| 100 Sports Ltd | Ashbourne | 2020 |
| 100 to 1 Competitions Ltd | Exeter | 2025 |
| 100 Views Limited | London | 2023 |
| 100% Active Limited | Eastleigh | 2018 |
| 100% C.A. Promotions Ltd | Lichfield | 2021 |
| 100% Digital Ltd | London | 2012 |
| 100% Soccer School C.I.C. | London | 2014 |
| 1000 Words Photography Ltd | London | 2009 |
| 1000GBP Ltd | Cardiff | 2023 |
| 1001 Inventions Limited | London | 2008 |
| 1001 Nights Productions Limited | London | 2007 |
| 100MPH Events Limited | Not Available | 2001 |
| 100PERCENTFITNESS Limited | Cambridge | 2016 |
| 100UK Ltd | Worthing | 2017 |
| 101 Canvas Prints Ltd | Stockport | 2023 |
| 1010 Capital Limited | London | 2024 |
| 10110101 Limited | Ascot | 2016 |
| 1019 Limited | Melrose | 2012 |
| 104 Collective CIC | Preston | 2026 |
| 104 Films South Limited | Sutton Coldfield | 2017 |
| 105M Ltd | London | 2025 |
| 1066 Films Limited | London | 2025 |
| 1066 Gymnastics | Eastbourne | 2010 |
| 1066 Martial Arts Ltd | Bexhill-On-Sea | 2024 |
| 1066 Padel Ltd | London | 2026 |
| 1066 Rifle and Pistol Club (Property) Limited | Hastings | 2000 |
| 1066 Rollerdance Ltd | St. Leonards-On-Sea | 2007 |
| 1066 Specials | East Sussex | 2006 |
| 1066 Target Sports Limited | St. Leonards | 2013 |
| 10693496 Ltd | Cardiff | 2017 |
| 10738251 Limited | Blackpool | 2017 |
| 1079 Fitness Limited | York | 2015 |
| 108 Media Ltd | London | 2021 |
| 1080 Fitness Ltd | Potters Bar | 2009 |
| 10804519 Limited | London | 2017 |
| 10860054 Limited | London | 2017 |
| 109 Studios Ltd | London | 2022 |
| 10952659 Ltd | London | 2017 |
| 10:25 Ltd | London | 2024 |
| 10AAA Ltd | Chessington | 2011 |
| 10DB Ltd | Hitchin | 2010 |
| 10FIFTY Limited | Godalming | 2001 |
| 10FOOT Limited | Cardiff | 2018 |
| 10FOOTBALLS Limited | Newcastle Upon Tyne | 2015 |
| 10IRONWOMEN Ltd | Manchester | 2023 |
| 10IS Academy Limited | London | 2016 |
| 10K Ltd | Ramsgate | 2002 |
| 10K Used Gear Limited | Ramsgate | 2005 |
| 10P Tickets Ltd | Maidstone | 2026 |
| 10TH Hole Events Ltd | Blackpool | 2025 |
| 10TH Planet Milton Keynes Ltd | Towcester | 2025 |
| 10XTRAINING Ltd | Leeds | 2023 |
| 11 Dyke Road Brighton Ltd | Hove | 2014 |
| 11 Pilates & Yoga Ltd | Liverpool | 2024 |
| 11 Ploughs Limited | Glasgow | 2025 |
| 11 Publishing Limited | London | 2017 |
| 11.11 Yoga Studio Ltd | Calne | 2019 |
| 110 YDS Ltd | Leicester | 2025 |
| 110COMPS Ltd | Southport | 2026 |
| 111 Music Group Ltd | London | 2024 |
| 111 Pilates Limited | London | 2010 |
| 111 Records Ltd | London | 2026 |
| 1111 Clarendon W Colchester (Leaseco) Limited | Shirebrook | 2014 |
| 1114 Ruxley LN Ewell (Leaseco) Limited | Shirebrook | 2020 |
| 112 Advisory, ST Andrews Ltd | St. Andrews | 2016 |
| 112 London Street Ltd | Reading | 2020 |
| 1120 Orion Way Kettering (Leaseco) Limited | Shirebrook | 2019 |
| 1121 Alcester Road Birmingham (Leaseco) Limited | Manchester | 2019 |
| 1129 Promotions Ltd | Newport | 2023 |
| 1132 Webb Ellis Rugby (Leaseco) Limited | Shirebrook | 2019 |
| 1133 Salefit (Leaseco) Limited | Shirebrook | 2019 |
| 1135 Ltd | Portsmouth | 2024 |
| 113EVENTS Limited | Swindon | 2012 |
| 115 Fitness Limited | Sutton-In-Ashfield | 2025 |
| 116 Racing Ltd | Stalybridge | 2018 |
| 117 Wellness House Limited | Liverpool | 2025 |
| 1170 Trading CIC | Guildford | 2019 |
| 119 Creative Limited | Bury St Edmunds | 2010 |
| 11:11 Creative Content Collective Ltd | London | 2025 |
| 11:11 Events Ltd | Bournemouth | 2018 |
| 11:11 Fitness and Performance Ltd | Earby | 2026 |
| 11:11 Innovations Ltd | Romford | 2025 |
| 11:11 Sports Limited | Benfleet | 2016 |
| 11ARCHES | Bishop Auckland | 2014 |
| 11ARCHES Night Show Limited | Bishop Auckland | 2014 |
| 11MEN Fitness Ltd | Reading | 2024 |
| 11RON Ltd | Leeds | 2023 |
| 11TH Hour Escape Rooms Limited | Salisbury | 2016 |
| 11TH Hour Events Limited | Cardiff | 2006 |
| 11TH Hour Ice Limited | Cardiff | 2016 |
| 12 Bar Entertainment Ltd | Chippenham | 2023 |
| 12 Bar Studios Ltd | Ayr | 2015 |
| 12 Gauge MMA Martial Arts Academy Ltd | Stockport | 2024 |
| 12 Gauge MMA Oldham Ltd | Oldham | 2024 |
| 12 Hour Chat Line & Yellow Nose Day Limited | Bradford | 2013 |
| 12 Reasons Limited | Tunbridge Wells | 2012 |
| 12 Rounds Boxing Ltd | London | 2013 |