| Alexander Dann Wealth Management Ltd | Bromley | 2020 |
| Alexander David Holdings Limited | Billericay | 2006 |
| Alexander Douglas Limited | Swansea | 2014 |
| Alexander Duthie & Sons (Holdings) Limited | Peterhead | 2021 |
| Alexander Duthie & Sons Group Limited | Peterhead | 2021 |
| Alexander Eden Care Management Ltd | Liverpool | 2026 |
| Alexander Finance Limited | Skegness | 1972 |
| Alexander Financial Consulting Ltd | Hants, | 2018 |
| Alexander Financial Ltd | Welwyn Garden City | 2007 |
| Alexander Financial Management Limited | Llanelli | 2011 |
| Alexander Financial Solutions Ltd | Bradford | 2018 |
| Alexander Fraser & Son,Limited | Brentwood | 1908 |
| Alexander Fraser Limited | London | 2016 |
| Alexander Graham Associates Limited | Marlow | 2017 |
| Alexander Green and Partners Ltd | Newark | 2008 |
| Alexander Group Europe Ltd | Cardiff | 2014 |
| Alexander Hall Associates Limited | London | 1992 |
| Alexander Hall Partnership Limited | London | 1999 |
| Alexander Harding Ltd | Guildford | 2011 |
| Alexander Hearn Group Limited | Leicester | 2021 |
| Alexander Hearn Holdings Limited | Cannock | 2021 |
| Alexander House Associates Limited | Wigan | 2002 |
| Alexander House Care Limited | Southend-On-Sea | 2016 |
| Alexander House Financial Planning Limited | Altrincham | 2017 |
| Alexander House Financial Services Limited | Altrincham | 2013 |
| Alexander House Ltd | Altrincham | 2021 |
| Alexander House Wealth Management Limited | Cheadle | 2012 |
| Alexander INS Brokers Limited | Chislehurst | 2025 |
| Alexander Invest Ltd | Brighton | 2018 |
| Alexander Investco Limited | Peterlee | 2025 |
| Alexander Investment Energy Ltd | Rickmansworth | 2021 |
| Alexander IP Limited | Norwich | 2016 |
| Alexander Jacob Financial Limited | Retford | 2025 |
| Alexander James AC Ltd | Leeds | 2021 |
| Alexander James Capital Ltd | Richmond | 2023 |
| Alexander James Financial Planning Limited | St. Leonards-On-Sea | 2011 |
| Alexander James Group Limited | Uxbridge | 2023 |
| Alexander James Mortgage Services Ltd | Woking | 2009 |
| Alexander James Partnership Limited | London | 2003 |
| Alexander James RS Ltd | Leeds | 2021 |
| Alexander James Wealth Management Limited | Wolverhampton | 2010 |
| Alexander Jean Property Group Ltd | Burton-On-Trent | 2025 |
| Alexander Joseph Cohen Limited | Manchester | 2022 |
| Alexander Justin Investments Ltd | Waterlooville | 2022 |
| Alexander Lauren Investments Ltd | Brackley | 2017 |
| Alexander Lloyd Levington Ltd | Newcastle Upon Tyne | 2023 |
| Alexander Luke Limited | Chelmsford | 2022 |
| Alexander Management Group Ltd | Sandwich | 2024 |
| Alexander Mann Limited | London | 2010 |
| Alexander Matthews Holdings Ltd | Ipswich | 2023 |
| Alexander MAY Property Holdings Limited | Bristol | 2023 |
| Alexander Miller Limited | Chobham | 2003 |
| Alexander Moore (NW) Ltd | Llandudno | 2026 |
| Alexander Mortgage Services Limited | Dartford | 2025 |
| Alexander Moss Limited | Coventry | 2015 |
| Alexander Muirhead Limited | Buckingham | 2023 |
| Alexander Niall Ltd. | Brackley | 2017 |
| Alexander Ramsay Holdings Ltd | London | 2026 |
| Alexander Reid IT Solutions Ltd | Grays | 2004 |
| Alexander Ross ARB Holdings Ltd | Reading | 2026 |
| Alexander Rowan Financial Limited | Reading | 2015 |
| Alexander Southwell Mortgage Services Limited | Romsey | 2019 |
| Alexander Swan Insurance Services Limited | Swindon | 2007 |
| Alexander Taylor (Bakeries) Limited | Strathaven | 2026 |
| Alexander Taylor (Properties) Limited | Strathaven | 2026 |
| Alexander Vivian Wealth Management Ltd | Kingston Upon Thames | 2016 |
| Alexander Windows Holdings Limited | Stockport | 2017 |
| Alexander Worth Ltd | Reading | 1996 |
| Alexander Wray & Co Limited | Mansfield | 2003 |
| Alexander's Financial Planning Limited | Burton-On-Trent | 2019 |
| Alexander-Head & Co Ltd | Wolverhampton | 2008 |
| Alexanderq Ltd | Rickmansworth | 2022 |
| Alexanders Associates (Scotland) Ltd. | Grangemouth | 1993 |
| Alexanders Complete Funeral Services (Holdings) Limited | Grimsby | 2019 |
| Alexanders Financial Advisory Ltd | Cardiff | 2024 |
| Alexanders Wealth Management Ltd | East Kilbride | 2017 |
| Alexanders’ SAW Mills Holdings Limited | Ayrshire | 2024 |
| Alexandra Finance Management Limited | Southend-On-Sea | 2019 |
| Alexandra FOX Brokers Limited | Fleet | 2020 |
| Alexandra Gladstone Holdings Ltd | Lichfield | 2024 |
| Alexandra Grove Holdings Ltd | London | 2018 |
| Alexandra Holdings (Manchester) Limited | Worsley | 2019 |
| Alexandra House Property Limited | Coventry | 2022 |
| Alexandra Propco Limited | Goffs Oak | 2024 |
| Alexandra Rodrigues Limited | Bournemouth | 2019 |
| Alexandra West Holdings Limited | Bolton | 2016 |
| Alexandra's Financial Management Limited | Gateshead | 2009 |
| Alexandre Global Holdings Ltd | London | 2025 |
| Alexandre Petit Holding Ltd | London | 2025 |
| Alexandria Holding Limited | London | 2016 |
| Alexandrite Monnet UK Findevco Limited | London | 2024 |
| Alexandrite Monnet UK Holdco PLC | London | 2024 |
| Alexandrite Monnet UK Topco Limited | London | 2024 |
| Alexara (FIC 2025) Ltd | Birmingham | 2025 |
| Alexbc Construction Limited | London | 2018 |
| Alexe Capital Ltd | London | 2018 |
| Alexe Finance Ltd | London | 2026 |
| Alexi Andriotti Investment Co. (UK) Ltd | London | 2014 |
| Alexia Capital Management Limited | Camberley | 2015 |
| Alexian Ifas Limited | Sandbach | 2011 |