| Advice & Coaching Partners Ltd | Reading | 2020 |
| Advice 4 Limited | Burscough | 2022 |
| Advice Bureau Ltd | Ilford | 2024 |
| Advice Cloud Limited | Brighton | 2006 |
| Advice Direct Limited | Ilford | 2023 |
| Advice Done Differently Ltd | Stoke-On-Trent | 2025 |
| Advice Financial Ltd | London | 2024 |
| Advice Firm Compliance Ltd | Haywards Heath | 2024 |
| Advice for Advisers Ltd | Filey | 2021 |
| Advice for Renters Limited | Manchester | 1989 |
| Advice France Limited | Surbiton | 2006 |
| Advice Inc Limited | Paignton | 2003 |
| Advice on Individual Rights in Europe | London | 1993 |
| Advice on Wealth Ltd | Swindon | 2005 |
| Advice Points Ltd | Watford | 2016 |
| Advice Resolutions Ltd | London | 2014 |
| Advice Specialists Ltd | London | 2010 |
| Advice Supermarket Ltd | Cheadle | 2010 |
| Advice Wise Solicitors Ltd | Ilford | 2012 |
| Advice X London Ltd. | London | 2025 |
| Advice Xpres Ltd | Wembley | 2007 |
| ADVICE4ACCOUNTS Ltd | Leicester | 2011 |
| ADVICE4DRIVERS Ltd | Dunstable | 2020 |
| ADVICE4YOU Ltd | Dunstable | 2018 |
| Advicely Limited | London | 2019 |
| Adviceme Ltd | London | 2024 |
| Advicenet Limited | Huntingdon | 2022 |
| Advicevector Ltd | London | 2018 |
| Adviceworx Ltd | Edinburgh | 2022 |
| Advici Ltd | London | 2023 |
| Advicia Consulting Limited | Reading | 2003 |
| Advicom Ltd | London | 2018 |
| Adview Computer Advertising Limited | Southwick | 1985 |
| Adview Media Ltd | Manchester | 2024 |
| Adviim Marketing Ltd | Dagenham | 2026 |
| Advik Consulting Limited | Chislehurst | 2023 |
| Advikaz Motor Sport Limited | Swanley | 2022 |
| Adville.Io Ltd | East Ham | 2026 |
| Advincibles Ltd | London | 2026 |
| Advini UK Limited | London | 1985 |
| Advis Limited | Monmouth | 2013 |
| Advisair Limited | Sturminster Newton | 2010 |
| Advisare Limited | London | 1994 |
| Advisario Limited | Folkestone | 2012 |
| Advise Advance Accelerate Limited | London | 2022 |
| Advise and Manage Ltd | London | 2024 |
| Advise and Olas Limited | Luton | 2019 |
| Advise Assist Consulting Ltd | Chipping Norton | 2021 |
| Advise Consulting Ltd | Dagenham | 2020 |
| Advise DC Limited | London | 2019 |
| Advise HER Limited | Holywood | 2025 |
| Advise Involve Ltd | Liverpool | 2026 |
| Advise Legal Consultancy Ltd | Richmond | 2017 |
| Advise My Finances Ltd | Swindon | 2022 |
| Advise UP Ltd | London | 2004 |
| Adviseaer Ltd | Ascot | 2024 |
| Advised Consulting Group Limited | Hadleigh | 2019 |
| Advised Executive Ltd | Ipswich | 2019 |
| Advised Mortgage Solutions Ltd | Scunthorpe | 2012 |
| Adviseit Invest Ltd | Stockport | 2006 |
| Adviser Compass Ltd | Bristol | 2026 |
| Adviser Connect Limited | Redditch | 2026 |
| Adviser Legal Limited | Stevenage | 2025 |
| Adviser Networks Limited | Pinner | 2006 |
| Adviser Outsourcing Limited | Hinckley | 2015 |
| Adviserra Ltd | London | 2026 |
| Advisers Arbitration & Business Consulting Limited | London | 2026 |
| Advisextra Limited | Bedford | 2023 |
| Advisgp Limited | London | 2010 |
| Advisily Ltd | Leeds | 2025 |
| Advising Safety Ltd | Blackpool | 2022 |
| Advisio Group Ltd | Liverpool | 2022 |
| Advisio Ltd | Bude | 2007 |
| Advision Consulting Ltd | London | 2021 |
| Advision Group Ltd | Kington | 2020 |
| Adviso Services Ltd | Dunbar | 2026 |
| Advisor Link Ltd | Welling | 2024 |
| Advisor Marketing Limited | Birmingham | 2011 |
| Advisor Media Group Limited | London | 2021 |
| Advisor Radius Limited | London | 2020 |
| Advisor-I Limited | Stockton On Tees | 2026 |
| Advisorbar Ltd | Telford | 2022 |
| Advisors Holdings Limited | London | 2005 |
| Advisors Unbound Ltd | London | 2023 |
| Advisorum Ltd | London | 2000 |
| Advisory & Business Consultancy Services Ltd | London | 2022 |
| Advisory 73 Limited | Colchester | 2026 |
| Advisory Board for the Arts Limited | Warrington | 2022 |
| Advisory Consultant Limited | Leeds | 2024 |
| Advisory Financial Services Limited | Ringwood | 2015 |
| Advisory for Extraordinary & Strategic Affairs LC Limited | London | 2025 |
| Advisory HP Limited | London | 2026 |
| Advisory International Limited | Cannock | 2026 |
| Advisory Investment Services Limited | Steyning | 2016 |
| Advisory Konnect Ltd | London | 2014 |
| Advisory LAB Ltd | London | 2026 |
| Advisory Plus Limited | Uxbridge | 2012 |
| Advisory Services Ltd | London | 2024 |
| Advisory Seven Ltd | Glasgow | 2024 |
| Advisory Solutions Europe Limited | Rockbourne | 2011 |