| Aperio Strategy Ltd | London | 2021 |
| Aperiodic Metastructures Ltd | Bournemouth | 2026 |
| Aperitio Ltd | Bury St. Edmunds | 2024 |
| Aperitivo Consulting Limited | Northampton | 2024 |
| Aperna Limited | Doncaster | 2023 |
| Aperrhub UK Limited | London | 2025 |
| Apers Ltd | Bridport | 2022 |
| Apersu Ltd | St. Leonards-On-Sea | 2024 |
| Apertana Limited | Canterbury | 2025 |
| Apertech Limited | Milton Keynes | 1998 |
| Apertio Consulting Limited | London | 2021 |
| Apertium Group Ltd | London | 2025 |
| Aperto Intellect Limited | Leeds | 2013 |
| Aperto-One Ltd | Hassocks | 2016 |
| Apertours Property Marketing Limited | Sutton | 2024 |
| Apertum Online Ltd | London | 2020 |
| Apertum Solutions Ltd | Letchworth Garden City | 2016 |
| Apertur Limited | London | 2026 |
| Apertura Studios Ltd | Lancaster | 2025 |
| Aperture - Natural Light Consulting Limited | Leigh-On-Sea | 2026 |
| Aperture Agency Ltd | Romford | 2025 |
| Aperture Blundell Ltd | Hull | 2026 |
| Aperture Bubbly Ventures Limited | London | 2023 |
| Aperture Consulting Limited | London | 2019 |
| Aperture Events Ltd | Cradley Heath | 2013 |
| Aperture Health Economics Ltd | Cardiff | 2025 |
| Aperture Health Limited | London | 2026 |
| Aperture House Limited | Altrincham | 2026 |
| Aperture Hub Ltd | London | 2020 |
| Aperture Intelligence AI Ltd | Southampton | 2024 |
| Aperture Laboratories Ltd | St. Albans | 2019 |
| Aperture Laboratory Limited | Stratford Upon Avon | 2017 |
| Aperture Live Limited | Beckenham | 2025 |
| Aperture London Limited | London | 2010 |
| Aperture Management Ltd | Bury St. Edmunds | 2021 |
| Aperture Marketing Ltd | Walsingham | 2019 |
| Aperture Media Ltd | Shipley | 2018 |
| Aperture Media Services Ltd | Barnsley | 2008 |
| Aperture North Ltd | Barrow-In-Furness | 2025 |
| Aperture Photography Ltd | London | 2023 |
| Aperture Prime Photography Ltd | Coventry | 2026 |
| Aperture Printing Limited | London | 2019 |
| Aperture Strategy Ltd | London | 2022 |
| Aperture Surveying Limited | Barnet | 2026 |
| Aperture Technical Ltd | Ledbury | 2017 |
| APERTURE2000 Limited | Guisborough | 2018 |
| Apertus Consulting Limited | Colchester | 2024 |
| Apertus Energy Limited | Northampton | 2022 |
| Apertus Installations Limited | Northampton | 2022 |
| Apertus View Limited | Colchester | 2023 |
| Aperx Consultants and Accountants Ltd | Cottingham | 2013 |
| Apesports Ltd | Jarrow | 2020 |
| APETELA1 Limited | Warrington | 2013 |
| Apetito (U.K.) Holdings Limited | Wiltshire | 1995 |
| Apeton Associates Limited | Staffordshire | 2006 |
| Apetrou Inspections Ltd | Liverpool | 2026 |
| Apeture Co Ltd | Rotherham | 2025 |
| Apex Building Consultants Limited | Luton | 2010 |
| Apex & Aura Limited | Kidderminster | 2026 |
| Apex & Co UK Ltd | London | 2026 |
| Apex (2020) Limited | Birmingham | 2020 |
| Apex (Hinckley) Limited | Loughton | 2006 |
| Apex (Loughborough) Limited | Loughton | 2004 |
| Apex 1 Solutions Ltd | Wirral | 2026 |
| Apex 10 Consulting Ltd | London | 2026 |
| Apex 102 Limited | Warrington | 2025 |
| Apex 20 Limited | London | 2019 |
| Apex 22 Consulting Limited | Southall | 2019 |
| Apex 22 Limited | Southall | 2012 |
| Apex 223 Ltd | Rotherham | 2026 |
| Apex 26 Ltd | Armitage Road | 2026 |
| Apex a Limited | Petersfield | 2012 |
| Apex ABS Limited | Bexleyheath | 2015 |
| Apex Accountancy and Business Services Ltd | Dunfermline | 2023 |
| Apex Accountancy Limited | Ascot | 2025 |
| Apex Accountancy Services (Scotland) Ltd | Banff | 2013 |
| Apex Accountancy Services (Surrey) Ltd | London | 2014 |
| Apex Accountancy Services Limited | Milton Keynes | 1993 |
| Apex Accountancy Solutions Ltd | Aberdeen | 2022 |
| Apex Accountancy SW Ltd | Barry | 2025 |
| Apex Accountants & Financial Advisory Ltd | Buckhurst Hill | 2025 |
| Apex Accountants & Tax Advisers Ltd | Buckhurst Hill | 2025 |
| Apex Accountants & Tax Advisors Ltd | Buckhurst Hill | 2015 |
| Apex Accountants & Tax Services Ltd | Buckhurst Hill | 2025 |
| Apex Accountants (Bradford) Ltd | Bradford | 2023 |
| Apex Accountants (London) Ltd | London | 2021 |
| Apex Accountants (South) Limited | Southampton | 2026 |
| Apex Accountants Limited | Telford | 2011 |
| Apex Accountax Ltd | London | 2022 |
| Apex Accounting & Tax Solutions Ltd | Buckhurst Hill | 2025 |
| Apex Accounting and Tax Limited | Wokingham | 2025 |
| Apex Accounting Ltd | London | 2020 |
| Apex Accounting Services Ltd | Horsham | 2020 |
| Apex Accounting Solutions Limited | Shrewsbury | 2013 |
| Apex Accounting Surrey Ltd | Haslemere | 2020 |
| Apex Accounts Ltd | Aylesbury | 2023 |
| Apex Acoustics Limited | Gateshead | 2005 |
| Apex Advanced Products Limited | Eastbourne | 2024 |
| Apex Advantage Ltd | London | 2026 |
| Apex Advertising Group Ltd | Poole | 2023 |