| 111 Engineering Limited | Market Drayton | 2022 |
| 111 Events Ltd | Ilford | 2023 |
| 111 Gleneagle Road Freehold Limited | London | 2013 |
| 111 Lansdowne Place Hove Management Limited | Hove | 1994 |
| 111 Studio Ltd | London | 2022 |
| 111/111A Milton Road Management Company Limited | London | 2004 |
| 1117 Epsom Road Guildford Surrey (Leaseco) Limited | Shirebrook | 2019 |
| 111FD Limited | London | 2014 |
| 112 Engineering Limited | Rotherham | 2023 |
| 112 Palace Road Management Limited | London | 1991 |
| 112 Palm Consultancy Limited | Ilkeston | 2025 |
| 112 Solutions Ltd | Birmingham | 2010 |
| 112 Upper Street Limited | Loughton | 2017 |
| 1122 Taxis Ltd. | Loanhead | 2006 |
| 1123 Limited | Manchester | 2020 |
| 1126 Taxis Ltd. | Edinburgh | 2006 |
| 112DG Limited | London | 2015 |
| 113 Botanicals Limited | Southend On Sea | 2019 |
| 113 Creative Ltd | London | 2015 |
| 113 the Avenue Limited | Bury St. Edmunds | 2011 |
| 113 Westbourne Park Road (Management) Limited | London | 2000 |
| 1138 Ltd | Cardiff | 2021 |
| 114 Design Limited | Redhill | 2021 |
| 114 Elms Crescent (Freehold) Company Limited | Emsworth | 2009 |
| 114 ST Martin's Lane Limited | London | 2020 |
| 11489510 Ltd | Wanstead London | 2018 |
| 115 Coaching Limited | Crowle | 2022 |
| 115 Degrees Limited | Kingston Upon Thames | 2019 |
| 115 Redland Road Limited | Shepton Mallet | 1989 |
| 1159 Marketing Ltd | Penarth | 2016 |
| 1159 Productions Limited | Chelmsford | 1997 |
| 115A Limited | London | 2024 |
| 116 Agar Grove Limited | Bognor Regis | 1998 |
| 116 Cardamon Limited | Chorley | 2008 |
| 116 Consulting Limited | Corby | 2026 |
| 116 Lobsters Limited | East Yorkshire | 2010 |
| 116/118, Shirland Road Limited | London | 1988 |
| 1162 Limited | Leigh-On-Sea | 2011 |
| 117 Consulting Limited | Sale | 2010 |
| 118 Data Resource Limited | Sutton Coldfield | 2007 |
| 118 Gauden Road Limited | London | 2015 |
| 118 Randolph Avenue Limited | London | 1987 |
| 1180 Management Ltd | London | 2018 |
| 1186 Taxis Ltd. | Edinburgh | 2018 |
| 119 Production Services Limited | Gerrards Cross | 2004 |
| 119 Somerset Road (Management) Limited | Bristol | 1985 |
| 119 Trading Limited | Kent | 2006 |
| 11:11 Brand Alignment Ltd | Swaffham | 2022 |
| 11:11 Creative Ltd | London | 2023 |
| 11:11 RG Ltd | London | 2024 |
| 11:FS Group Limited | London | 2016 |
| 11A Limited | Huntingdon | 2026 |
| 11AM Design Ltd | London | 2026 |
| 11AND12 Limited | Hinckley | 2015 |
| 11B/C Sunderland Road Limited | Cambridge | 2010 |
| 11BRIDGE Consulting Ltd | Birmingham | 2025 |
| 11F Ltd | Exminster | 2022 |
| 11FOUR22 Ltd | Glasgow | 2023 |
| 11HA Ltd | London | 2025 |
| 11K Consulting Ltd | London | 2014 |
| 11K Creative Ltd | London | 2025 |
| 11MILLSTREET Limited | Enniskillen | 2026 |
| 11PLUS Tuition Center Ltd | Chelmsford | 2018 |
| 11STUDIOS Ltd | London | 2024 |
| 11TH Hour Extensions & Lofts Limited | Hounslow | 2019 |
| 11THIRTYONE Crisis Advisory Ltd | York | 2026 |
| 11VEN11 Limited | Basingstoke | 2015 |
| 11X Entrepreneurs Limited | Stevenage | 2025 |
| 12 Albert Road London Limited | | 2006 |
| 12 Bar Engineering Limited | Warwick | 2007 |
| 12 Brackenbury Road (Maintenance) Company Limited | Bristol | 1982 |
| 12 Bridge Close Limited | London | 2016 |
| 12 Communications Limited | St. Ives | 2025 |
| 12 Comyn Road Residents Limited | London | 2015 |
| 12 Consulting (London) Ltd | Bicester | 2016 |
| 12 Conway Street Management Company Limited | London | 1982 |
| 12 Degrees Celsius Limited | Ashford | 2021 |
| 12 Done Ltd | Farnham | 2022 |
| 12 Draycott Place Residents Company Limited | Croydon | 1983 |
| 12 Ennismore Avenue Limited | | 1985 |
| 12 Foot Limited | Cambridge | 2020 |
| 12 Garden Design Limited | Amersham | 2016 |
| 12 Garlinge Road Freehold Company Limited | | 1998 |
| 12 Herndon Road Limited | London | 2003 |
| 12 Kidbrooke Park Road Limited | London | 2010 |
| 12 Lennox Road South Management Company Limited | Portsmouth | 2008 |
| 12 Limited | Gravesend | 2018 |
| 12 Magpies Accountancy Ltd | Long Melford | 2025 |
| 12 Management Ltd | London | 2014 |
| 12 Market ST Ltd | Hebden Bridge | 2024 |
| 12 Months of Summer Ltd | Camberley | 2022 |
| 12 Nelson's ROW Management Company Limited | London | 2003 |
| 12 Orchards Limited | Manningtree | 2015 |
| 12 Park Hall Road Limited | London | 1991 |
| 12 Pillars Ltd | | 2007 |
| 12 Print Limited | Rayleigh | 2019 |
| 12 Seasons Ltd | London | 2025 |
| 12 Sports Media Group Limited | South Ockendon | 2019 |
| 12 Sussex Square Resident's Association Limited | | 1990 |
| 12 Touch Productions Ltd | London | 2025 |