| Alexander Partners Consulting Limited | London | 2014 |
| Alexander Partnership Ltd | Plymouth | 2019 |
| Alexander Payne Design Limited | Camberley | 2020 |
| Alexander Peter Property Services Limited | Peterborough | 2023 |
| Alexander Pittaway Ltd | Kenilworth | 2013 |
| Alexander PR Limited | London | 2008 |
| Alexander Probin Limited | Cheshire | 2006 |
| Alexander Procurement Limited | Halifax | 2022 |
| Alexander Project Consulting Limited | Northampton | 2022 |
| Alexander Proudfoot (Europe) Limited | London | 1989 |
| Alexander Purcell Rodrigues Design Limited | Moreton-In-Marsh | 2015 |
| Alexander Ragnar Limited | Borehamwood | 2023 |
| Alexander Rail Advisory Ltd | Stoke-On-Trent | 2026 |
| Alexander Reavley Medical Ltd | Berwick Upon Tweed | 2024 |
| Alexander Reed Associates Ltd | London | 2019 |
| Alexander Regulatory and Quality Ltd | Gateshead | 2023 |
| Alexander Regulatory Consulting Limited | March | 2025 |
| Alexander Rhind Photography Limited | Barnstaple | 2017 |
| Alexander Roan Consulting Limited | London | 2020 |
| Alexander Rose Holdings Ltd | Plymouth | 2020 |
| Alexander Rose Solicitors Limited | Gants Hill | 2018 |
| Alexander Ross (Financial Services) Limited | Manchester | 1981 |
| Alexander Ross Holdings Limited | Falkirk | 1987 |
| Alexander Ross Management Services Limited | Swanley | 1980 |
| Alexander Ruben Consulting Ltd | Ilford | 2022 |
| Alexander S Richardson Limited | London | 2017 |
| Alexander Samson Consulting Limited | Haywards Heath | 2019 |
| Alexander Samuel Consultants Limited | Burton Upon Trent | 2018 |
| Alexander Saunders Limited | Watford | 2019 |
| Alexander Scientific Maintenance Limited | Wallingford | 2008 |
| Alexander Scott Limited | London | 2014 |
| Alexander Sharpe Ltd | Ramsgate | 2019 |
| Alexander Shaw Limited | Bristol | 2010 |
| Alexander Shaw Solicitors Limited | London | 2017 |
| Alexander Solicitors Limited | Leeds | 2009 |
| Alexander Starkey Limited | London | 2018 |
| Alexander Steele Ltd | Edinburgh | 2018 |
| Alexander Steinbeck (PR) Limited | Cardiff | 1997 |
| Alexander Stock Ltd | Wigan | 2025 |
| Alexander Stoddart Ltd | Paisley | 2014 |
| Alexander Survey Associates Ltd | Leigh-On-Sea | 2022 |
| Alexander T Holdings Limited | Newcastle Upon Tyne | 2001 |
| Alexander Taylor Ltd | London | 2012 |
| Alexander Thomas Martin Ltd | London | 2022 |
| Alexander Trader Limited | Doncaster | 2017 |
| Alexander Vane Limited | Great Missenden | 2018 |
| Alexander Vaughan Limited | Fareham | 2011 |
| Alexander Venture Consulting Limited | Charing | 2005 |
| Alexander Ventures Ltd | Cullompton | 2024 |
| Alexander Waterworth Interiors Ltd. | London | 2010 |
| Alexander Wealth Management Limited | Cartland | 2018 |
| Alexander Windele Limited | Gravesend | 2018 |
| Alexander Wood Accountants & Co Limited | Paisley | 2010 |
| Alexander Wooff Associates Limited | Ashby-De-La-Zouch | 2017 |
| Alexander Woolfe Ltd | Manchester | 2024 |
| Alexander Young Limited | London | 2018 |
| Alexander-Bulazs Consultancy Ltd | Bedford | 2024 |
| Alexander-Churchill Accountants Limited | Chesham | 2015 |
| Alexander-Green Surveyors Limited | Gorleston In Sea | 2007 |
| Alexander-Passe Limited | London | 2003 |
| Alexander-Wallace Health Care Ltd | Margate | 2023 |
| Alexander-Wallace Ltd | Margate | 2021 |
| Alexander-Wallace Therapeutics Ltd | Margate | 2026 |
| Alexander-Watson Consulting Ltd | Biggleswade | 2022 |
| Alexanders (UK) Limited | Pinner | 2000 |
| Alexanders Accountants Limited | Horley | 2022 |
| Alexanders Consultant and Management Services Limited | Sheerness | 2017 |
| Alexanders of Edinburgh Limited | Edinburgh | 2015 |
| Alexanders Strategic Planning Limited | Horley | 2001 |
| Alexander’S of Oakmere Ltd | Northwich | 2022 |
| Alexandr Walker Accountants Limited | London | 2015 |
| Alexandra & Spencer Limited | London | 2018 |
| Alexandra Abbas Group Ltd | London | 2026 |
| Alexandra Abrams Limited | Rochford | 2023 |
| Alexandra Accounting Limited | Slough | 2016 |
| Alexandra Anthony Limited | Borehamwood | 2004 |
| Alexandra Associates Limited | Wisbech | 1962 |
| Alexandra Austin Freelance Ltd | London | 2024 |
| Alexandra Barnes Consulting Ltd | Southampton | 2021 |
| Alexandra Bence Limited | Maldon | 2014 |
| Alexandra Benson Limited | London | 2021 |
| Alexandra Blouna Design Limited | London | 2025 |
| Alexandra Bookkeeping + Accountancy Services Limited | West Midlands | 2003 |
| Alexandra Buck Limited | Southampton | 2014 |
| Alexandra Care Limited | Weymouth | 2013 |
| Alexandra Channer Ltd | Warminster | 2018 |
| Alexandra Communication Ltd. | | 1998 |
| Alexandra Consultancy Ltd | London | 2024 |
| Alexandra Consulting Ltd | Reigate | 2023 |
| Alexandra Cork Home Designs Limited | Walton On Thames | 2014 |
| Alexandra Couzens Coaching Ltd | Crowthorne | 2024 |
| Alexandra Cronan Creative Limited | London | 2025 |
| Alexandra Davis Limited | Croydon | 2017 |
| Alexandra Dent Psychological Services Limited | Melton Mowbray | 2015 |
| Alexandra Didio Ltd | Bishop'S Stortford | 2024 |
| Alexandra Dixon Interiors Limited | Buckinghamshire | 1989 |
| Alexandra Dudley Limited | Halifax | 2016 |
| Alexandra Events Limited | Preston | 2023 |
| Alexandra FOX Ltd | Fleet | 2016 |
| Alexandra Franchising Ltd | London | 2019 |