| Apollo Insights Ltd | Sevenoaks | 2025 |
| Apollo Kallidus Holdco Limited | Altrincham | 2019 |
| Apollo Kallidus Nominee Limited | Altrincham | 2020 |
| Apollo Kallidus Topco Limited | Altrincham | 2020 |
| Apollo Labs BIO Tech UK Ltd | Waltham Cross | 2026 |
| Apollo LAM Limited | Newark | 2025 |
| Apollo Land Services Ltd | Stockport | 2025 |
| Apollo Language Consultancy Limited | London | 2013 |
| Apollo Laser Therapy Limited | Widnes | 2025 |
| Apollo Legal Services Limited | Bolton | 2013 |
| Apollo Leisure Group Limited | London | 1987 |
| Apollo Management Associates Limited | Thames Ditton | 2017 |
| Apollo Management Consulting Ltd | Manchester | 2021 |
| Apollo Marketing Group Ltd | Romford | 2025 |
| Apollo Mechanical Services (South East) Limited | Maidstone | 2006 |
| Apollo Medical Ltd | London | 2025 |
| Apollo Motion Limited | Braunton | 2024 |
| Apollo Motor Group Limited | Worcester | 2006 |
| Apollo Music Distributions Ltd | London | 2022 |
| Apollo NOX Ltd | Halifax | 2024 |
| Apollo Panacea Group Ltd | Glasgow | 2018 |
| Apollo Payroll Ltd | Harrow | 1998 |
| Apollo Pharma Solutions Limited | Stowmarket | 2017 |
| Apollo Photographers Limited | Isleworth | 1983 |
| Apollo Photos Limited | Spalding | 2025 |
| Apollo Planning Ltd | Glasgow | 2021 |
| Apollo Plus Ltd | Oxon | 2006 |
| Apollo PR Ltd | London | 2024 |
| Apollo Procurement Ltd | Blackwood | 2020 |
| Apollo Professional Services Ltd | Banbury | 2013 |
| Apollo QS Consultancy Ltd | Welwyn Garden City | 2023 |
| Apollo Reward Solutions Limited | Billingham | 2012 |
| Apollo Safety Consulting Ltd | Leeds | 2023 |
| Apollo Safety Ltd | Mexborough | 2022 |
| Apollo Saint Clair Limited | Tredegar | 2021 |
| Apollo Security London Ltd | Osterley | 2018 |
| Apollo Services (International) Ltd | Birmingham | 2004 |
| Apollo Strategic Communications Limited | Helsby | 2008 |
| Apollo Strategy Ltd | London | 2026 |
| Apollo Studio Limited | Gateshead | 2021 |
| Apollo Surrey Limited | Ashford | 2012 |
| Apollo Tax Services Limited | Walsall | 2010 |
| Apollo Tax Solutions Limited | Chertsey | 2026 |
| Apollo Teaching Services Employee Ownership Trustee Ltd | Bridgend | 2023 |
| Apollo Town Planning Ltd | Castleford | 2018 |
| Apollo Tyres (London) PVT Ltd. | London | 2014 |
| Apollo Tyres (UK) Holdings Ltd. | London | 2012 |
| Apollo Vehicle Safety Limited | Corston | 2014 |
| Apollo Window Blinds Ltd | Nottingham | 1993 |
| Apollo Zone Limited | Barnet | 2024 |
| Apollodorus Architecture Limited | Peterborough | 2016 |
| Apollon Construction Services Ltd | Bromborough | 2015 |
| Apolloncorp Ltd | London | 2025 |
| Apollonia Limited | Chesham | 2006 |
| Apollonia Sussex Ltd | Chichester | 2024 |
| Apolloonepower Ltd | Norwich | 2022 |
| Apollos Church Advisory Limited | Cambridge | 2024 |
| Apollos Consultancy Ltd | Perth | 2013 |
| Aponto Limited | London | 2026 |
| Apopsi Consulting Limited | Bath | 2015 |
| Apopsis Ltd | Guildford | 2017 |
| Apoptogenth Limited | Leeds | 2025 |
| Aporia Consulting Limited | Plymouth | 2007 |
| Aporia Strategy Limited | Hadleigh, Benfleet | 2025 |
| Aport (London) Ltd | London | 2009 |
| Apos Studio Ltd | London | 2025 |
| Aposphere Ltd | Woodbridge | 2015 |
| Apostille and Certification Services Limited | London | 2023 |
| Apostille and Legalisation Services Ltd | Croydon | 2017 |
| Apostille Direct Legalisation Agents Ltd | London | 2024 |
| Apostille Office UK Limited | Barking | 2023 |
| Apostille Solutions Ltd | Milton Keynes | 2022 |
| Apostle Accounting Limited | Leeds | 2012 |
| Apostle Consulting Limited | Portsmouth | 2019 |
| Apostle Ltd | Haywards Heath | 2024 |
| Apostle Movement Ltd | Chester | 2025 |
| APOSTLE22 Ltd | London | 2025 |
| Apostles Castings Technology Ltd | Kington | 2014 |
| Apostol Limited | Twickenham | 2025 |
| Apostolos Chatzimeletiou Ltd | Leicester | 2025 |
| Apostolos Kourtis Ltd | Norwich | 2020 |
| Apostrophe Accounted Limited | Coventry | 2022 |
| Apostrophe Architects Ltd | Falmouth | 2009 |
| Apostrophe Ltd | Manchester | 2019 |
| Apostrophe Media Limited | London | 2021 |
| Apostrophe Solutions Limited | Sutton | 2007 |
| Apotech Consulting Limited | London | 2021 |
| Apotech in Extreme Ltd | Nottingham | 2025 |
| Apotechnos Limited | Kingston-Upon-Thames | 2014 |
| Apotek AV Limited | Royston | 2011 |
| Apothecary Solutions Ltd | Telford | 2018 |
| Apothem Limited | York | 2010 |
| Apotunity Limited | Macclesfield | 2016 |
| Apoyo Architects Ltd | Canterbury | 2022 |
| App (Services) Ltd | Huntly | 2014 |
| App 101 Ltd | Norwich | 2024 |
| App Accountants Limited | Hazlemere | 2005 |
| App Accountax Ltd | Barking | 2024 |
| App Advisory Plus Ltd | Norwich | 2018 |
| App Architecture Limited | West Wickham | 2015 |