| Anzal Business Ltd | Glasgow | 2025 |
| Anzaltech Limited | Ruislip | 2025 |
| Anzio Ltd | Enfield | 2016 |
| An’S Nails 79 Ltd | St. Helens | 2025 |
| AO Beauty Limited | Selby | 2019 |
| AO Consulting Europe Limited | St. Albans | 2017 |
| AO Events Limited | Crewe | 2017 |
| AO Gentz & Hair Co. Ltd | Weston-Super-Mare | 2025 |
| AO Homeservices Ltd | Prestatyn | 2020 |
| AO Software Development Ltd | Warrington | 2019 |
| AO Tailoring Services Ltd | Lowestoft | 2020 |
| AO Trading (Scotland) Ltd | Glasgow | 2021 |
| AOA Creative Consulting Ltd | Derby | 2025 |
| AOA Logistics Ltd | Birmingham | 2025 |
| AOA Media Ltd | London | 2026 |
| AOB Maidstone Ltd | Hadlow | 2020 |
| AOC Sport Limited | London | 2014 |
| AOC Studios Limited | London | 2026 |
| Aocy Aesthetics Ltd | Chatham | 2024 |
| AOE Services Ltd | Milton Keynes | 2023 |
| AOG Foundation Limited | Edgware | 2009 |
| Aog-Mission Alliance New Hope International Ltd | London | 2025 |
| Aoglowaesthetics Ltd | Wokingham | 2024 |
| AOH Hair Ltd | Derby | 2019 |
| AOH Workspace Limited | London | 2019 |
| Aoife Pomphrett Hairdressing Limited | Bathgate | 2023 |
| Aoiuk Limited | Romford | 2019 |
| AOK Events EOT Limited | Wigan | 2023 |
| AOK Fitness Limited | Isleworth | 2017 |
| AOK Manchester Ltd | Manchester | 2016 |
| Aoka Limited | London | 2016 |
| Aoko Ltd | Bristol | 2023 |
| Aola Limited | Leicester | 2026 |
| Aomot Productions Ltd | Glasgow | 2024 |
| Aonc Limited | Newbury | 2014 |
| Aone Beauty Salon Ltd | Leeds | 2024 |
| AOP Property Limited | London | 2024 |
| Aoptical Limited | Manchester | 2016 |
| Aora Aesthetics Limited | London | 2022 |
| Aorta UK Ltd | London | 2004 |
| Aosak UK Ltd | Basildon | 2022 |
| Aotc Services Limited | Cheltenham | 2025 |
| Aotech Limited | Romford | 2019 |
| Aouled Ltd | Cardiff | 2025 |
| AOV Systems Ltd | Keighley | 2018 |
| Aovihair Limited | Southend-On-Sea | 2025 |
| AP & MP Limited | Bicester | 2012 |
| AP Art Advisory Ltd | Romsey | 2025 |
| AP Beauty in Peace Ltd | London | 2026 |
| AP Beauty Salon Ltd | Harrow | 2026 |
| AP Building Ltd | Cardiff | 2021 |
| AP Coaching and Consultancy Ltd | Liverpool | 2015 |
| AP Compliance Solutions Ltd | Much Hadham | 2023 |
| AP Construction & Renovation Ltd | Ware | 2023 |
| AP E-Com Ltd | London | 2022 |
| AP Eventss NI Limited | Belfast | 2021 |
| AP Farriery Ltd | Wiltshire | 2025 |
| AP Fusion Hair Extensions Limited | London | 2026 |
| AP Hair Studio Ltd | London | 2025 |
| AP Holdings Scotland Limited | Clydebank | 2021 |
| AP Holt Ltd | Todmorden | 2017 |
| AP Home Maintenance Ltd | Ware | 2023 |
| AP Implants Ltd | Kingswinford | 2024 |
| AP JET Wash Ltd | Colchester | 2023 |
| AP London Road Limited | London | 2019 |
| AP Management Consultants Ltd | London | 2024 |
| AP Murray Limited | London | 2022 |
| AP OSS Direct Limited | Bedford | 2013 |
| AP Personal Nails Care Ltd | Arundel | 2026 |
| AP Pharma Ltd | London | 2016 |
| AP Plan Services Ltd | Warrington | 2014 |
| AP Plumbing and Heating Services Ltd | St. Asaph | 2018 |
| AP Prime Services Ltd | Southall | 2022 |
| AP Senior Servicer Limited | London | 2017 |
| AP Seva Ltd | Glasgow | 2020 |
| AP Surveys Ltd | London | 2020 |
| AP Tanning & Beauty Limited | East Molesey | 2021 |
| AP TEC Limited | London | 2018 |
| AP the Coaching Physio Limited | Stockton-On-Tees | 2025 |
| AP Tiling Services Limited | Bushey | 2018 |
| AP Training Consultancy Limited | Bolton | 2012 |
| AP Wellbeing Ltd | Maidstone | 2011 |
| AP WIP Investments Borrower UK Ltd | Staffordshire | 2023 |
| AP2 Ltd | Brigg | 2016 |
| APA Events and Security Limited | Cheshunt | 2014 |
| APA Inc Ltd | London | 2026 |
| APA Property Holdings Limited | | 1986 |
| APA Training Limited | Aberdeen | 2019 |
| APA Ways Ltd | Leicester | 2018 |
| Apaass Limited | East Malling | 2001 |
| Apache Industries Limited | Blackpool | 2018 |
| Apara Group Ltd | Wolverhampton | 2017 |
| Aparctias Technologies Limited | Gloucester | 2013 |
| Apartment Services (North) Ltd | London | 2019 |
| Apartmentory Limited | London | 2017 |
| Apartmentscompany Ltd | Cardiff | 2018 |
| Apatura Growth and Development Ltd | Lightwater | 2022 |
| Apaukandeurope Limited | Cardiff | 2017 |
| Apav 232 Limited | Chichester | 2023 |
| Apav 233 Limited | Chichester | 2023 |