| 80:20 Risk Management Limited | Polegate | 2013 |
| 80B Limited | Camberley | 2019 |
| 80E Sava the Bookkeeper Ltd | Cardiff | 2021 |
| 80EIGHT Consultancy Ltd | Bicester | 2020 |
| 80FOUR Brand Elevation Ltd | Congleton | 2025 |
| 80K Consulting Limited | Littleborough | 2025 |
| 80K Limited | Bedford | 2006 |
| 80SROCKSHOTS Ltd | Cheam | 2024 |
| 80TH Atom Limited | Cambridge | 2013 |
| 80W Holdings Ltd | Kettering | 2020 |
| 81 Amarco Circuit Limited | London | 2015 |
| 81 Barnsbury Street N.1. Limited | London | 1976 |
| 81 Blatchington Road Limited | Ardingly | 2010 |
| 81 Consultancy Ltd | Wigston | 2024 |
| 81 Ellington Road RTM Company Limited | Kent | 2004 |
| 81 North Architecture Ltd | Darlington | 2025 |
| 81 North Interiors Ltd | Darlington | 2024 |
| 81 ST. Mark's Road Residents Limited | | 1998 |
| 81 Widmore Road Residents Association Limited | Bromley | 2001 |
| 810 Limited | Greater Manchester | 2012 |
| 813 Studio Ltd | London | 2017 |
| 815077 Limited | South Ruislip | 1964 |
| 818 Creative LAB Ltd | London | 2026 |
| 8196 Collective Ltd | London | 2021 |
| 82 Aspinall Road Limited | London | 2005 |
| 82 Consultancy Limited | Arundel | 2022 |
| 82 Consulting Ltd | Leeds | 2019 |
| 82 Design Workshop Limited | Sawston | 2021 |
| 82 KLM Ltd | Wolverhampton | 2024 |
| 82 Linwood Limited | Leicester | 2019 |
| 820 Studio Ltd | London | 2025 |
| 821 Ltd | Abergele | 2020 |
| 823 Edin Ltd. | Tranent | 2004 |
| 824 Edin Ltd. | Edinburgh | 2005 |
| 828 Law Ltd | Preston | 2016 |
| 828 Taxis Ltd. | Tranent | 2007 |
| 82CHL Ltd | London | 2020 |
| 82COMMS Ltd | London | 2024 |
| 82MM Photography Limited | Cranbrook | 2023 |
| 83 L&D Ltd | Colchester | 2015 |
| 83 Ric’S Precision Manufacturing Ltd | Coventry | 2024 |
| 83 Sandylands Promenade Management Company Limited | Heysham | 2006 |
| 83 Studio Limited | Manchester | 2019 |
| 83 Waddon New Road Limited | Chelmsford | 2017 |
| 831 Services Limited | Bedford | 2005 |
| 831 Taxis Ltd. | Edinburgh | 2007 |
| 83NORTH UK Management Limited | London | 2011 |
| 84 Aaron Court Limited | Watford | 2008 |
| 84 Buckingham Road Limited | Gerrards Cross | 2010 |
| 84 Digital Ltd | Hungerford | 2019 |
| 84 Emotion Ltd | Wirral | 2016 |
| 84 Engineering Ltd | Bath | 2023 |
| 84 Holdings Ltd | Milton Keynes | 2023 |
| 84 Kelmscott Road Management Limited | | 1999 |
| 84 Lowlands Road Freehold Limited | London | 2017 |
| 84 Madeley Road Management Company Limited | Cheltenham | 2001 |
| 84 Middlesex Street Management Company Limited | Barnet | 1995 |
| 84 New Things Ltd | Potters Bar | 2017 |
| 84 Palmerston Road Flat Management Limited | London | 2004 |
| 84 Solutions Ltd | London | 2024 |
| 84 Tyrwhitt Road Management Company Limited | London | 2000 |
| 840 Property and Surveying Services Ltd | Barnsley | 2023 |
| 840 Taxis Ltd. | Glasgow | 2008 |
| 840AM Limited | Folkestone | 2021 |
| 845 Holdings Limited | Reading | 2016 |
| 848 Ventures Ltd | Balerno | 2026 |
| 8482 Management Services Ltd | Glasgow | 2022 |
| 84BY Ltd | London | 2025 |
| 84I Limited | Altrincham | 2014 |
| 84MPR Ltd | London | 2026 |
| 85 Boston Manor Road (Management) Limited | Middlesex | 2004 |
| 85 Degrees Renewable Management Limited | Barnet | 2021 |
| 85 Fernhead Road Freehold Company Limited | London | 2013 |
| 85 Garratt Terrace Limited | London | 2009 |
| 85 HNP Limited | | 2004 |
| 85 Lime Grove Management Limited | London | 2007 |
| 85 Pembury Road Limited | Ipswich | 2021 |
| 85 Warrington Crescent Management Company Limited | Oswestry | 1999 |
| 852 Taxis Ltd. | Loanhead | 2010 |
| 86 Degrees Consulting Limited | Rugby | 2020 |
| 86 Engineering Limited | South Woodford | 2017 |
| 86 Environmental Research and Consultancy CIC | Leeds | 2025 |
| 86 Honeywell RD (Freehold) Ltd | London | 2012 |
| 86 Marketing Ltd | London | 2024 |
| 86 Tufnell Park Road Limited | London | 2004 |
| 864 Limited | London | 2024 |
| 86400 Consulting Limited | Manchester | 2019 |
| 865 Digital Media Ltd | Billericay | 2005 |
| 86A Limited | Eastleigh | 2022 |
| 86K Ltd | London | 2026 |
| 86TV Limited | Banbury | 2012 |
| 87 Consulting Ltd | London | 2024 |
| 87 Kenyon Street Management Company Limited | | 2007 |
| 87 Larkhall Rise Limited | London | 2003 |
| 87 Management Ltd | Keston | 2016 |
| 87 Saltram Freehold Limited | London | 2022 |
| 87 Victoria Drive RTM Company Limited | Eastbourne | 2008 |
| 871 Taxis Ltd. | Broxburn | 2010 |
| 876 Digital Ltd | London | 2024 |
| 876 Marine Ltd | Edinburgh | 2020 |