| Alan B Partnership Limited | Clitheroe | 2006 |
| Alan Bailes Consultancy Limited | Redditch | 2020 |
| Alan Baldwin Services Limited | Exeter | 2019 |
| Alan Batley Consulting Limited | Milton Keynes | 2010 |
| Alan Baxter Limited | London | 2008 |
| Alan Beattie Consultancy Limited | Maidenhead | 2014 |
| Alan Bell and Associates Limited | Stockport | 2002 |
| Alan Benfield Holdings Limited | Belper | 2004 |
| Alan Bennett Biotechnology Consulting Ltd | Wantage | 2022 |
| Alan Bennett Consulting Limited | London | 2016 |
| Alan Bishop Themeworks Limited | Godalming | 1998 |
| Alan Bisset Completions Limited | Aberdeen | 2008 |
| Alan Boddy Accountancy Ltd | Wickford | 2018 |
| Alan Bond Photography Limited | Chippenham | 2003 |
| Alan Booth Commissioning Limited | Enfield | 2013 |
| Alan Boswell Group Limited | Norwich | 1989 |
| Alan Boswell Risk Management Limited | Norwich | 2004 |
| Alan Boyd Productions Limited | Buckinghamshire | 1980 |
| Alan Brooker Drapes Limited | Norwich | 2024 |
| Alan Brookes Consultants Limited | Leamington Spa | 2006 |
| Alan Brough Associates Limited | Uttoxeter | 1975 |
| Alan Brown Development Services Limited | Falmouth | 2008 |
| Alan Brown Engineering Solutions Limited | Paisley | 2015 |
| Alan Brown Technical Services Limited | Cirencester | 1998 |
| Alan Browne Lapping Services Limited | Leamington Spa | 2019 |
| Alan Buanne Limited | London | 2015 |
| Alan Buckley Limited | Newbury | 2012 |
| Alan Bush (Holdings) Limited | Leeds | 2000 |
| Alan Byrne Engineering Services Ltd | Buckley | 2025 |
| Alan C Prendergast Limited | Hereford | 2006 |
| Alan Cairns Associates Limited | Warmley | 2000 |
| Alan Caldwell Associates Limited | Comrie | 2014 |
| Alan Cavill Ltd | Bristol | 2009 |
| Alan Clarkson Consultancy Ltd | Yateley | 2017 |
| Alan Commercial Finance Ltd | Worcester | 2017 |
| Alan Consultancy Limited | London | 2025 |
| Alan Cook Architects Limited | Co Down | 2005 |
| Alan Cooper Limited | Preston | 1996 |
| Alan Cope Services Ltd | Llandysul | 2015 |
| Alan Cosgrove Limited | Blandford Forum | 2009 |
| Alan Courtnell Associates Limited | Battle | 2003 |
| Alan Cowper Ltd | London | 2019 |
| Alan COX Associates Limited | Barnet | 2008 |
| Alan Crawford Consultancy Ltd | Birmingham | 2024 |
| Alan Curtis Solicitors Ltd. | Monmouth | 2021 |
| Alan D & Co Ltd | Ilford | 2024 |
| Alan D Connelly Associates Ltd | Glasgow | 2024 |
| Alan D Scoffield Heating Limited | Wirral | 2002 |
| Alan Dadfar Limited | Kingston Upon Hull | 2025 |
| Alan Davies Consulting Limited | Wirral | 2013 |
| Alan Davies Services Limited | Knighton | 2016 |
| Alan DE Maid Limited | Altrincham | 2010 |
| Alan Dean Systems Ltd | Redditch | 2015 |
| Alan Dodds Limited | Herts | 2006 |
| Alan Douglas Aviation Ltd | Wilmslow | 2022 |
| Alan DOW Associates Ltd | Stirling | 2017 |
| Alan Draper Automotive Consultants Ltd | Dunmow | 2018 |
| Alan Dunton Pipelines Limited | Whitley Bay | 2007 |
| Alan E Mitchell Ltd | Retford | 2011 |
| Alan Elborough Consultancy Services Ltd | Warrington | 2026 |
| Alan Electrical Holdings Limited | Watford | 2014 |
| Alan Electrical Switchgear Holdings Limited | Watford | 2021 |
| Alan Ellis Financial Services Limited | Milton Keynes | 2017 |
| Alan Elrington Associates Limited | Newcastle Upon Tyne | 1997 |
| Alan Evans Consulting Limited | Eastleigh | 2019 |
| Alan F FOX Consulting Ltd | St. Albans | 2022 |
| Alan Farlie Design Ltd | Welwyn Garden City | 2025 |
| Alan Fell Consultancy Limited | Great Dunmow | 1996 |
| Alan Ferns Engineering Services Ltd | Leek | 2022 |
| Alan Fitzpatrick IIP Settlement 2003 Limited | Manchester | 2003 |
| Alan Forrester & Co Ltd | Plymouth | 2018 |
| Alan G Haines Associates Limited | Worsborough Barnsley | 2004 |
| Alan Gardiner Translation Ltd | Wedmore | 2015 |
| Alan Gaskell Associates Limited | Nottingham | 1995 |
| Alan Gibbons Associates Limited | Barnet | 2011 |
| Alan Glenister Services Ltd | London | 2011 |
| Alan Goldsman Limited | Northwood | 2014 |
| Alan Graham Consultants Limited | Peterborough | 2014 |
| Alan Graham Hall Ltd | Newport | 2025 |
| Alan Gray and Sons Accountants Ltd | Wallsend | 2011 |
| Alan Green Accountancy Limited | Aylesbury | 2006 |
| Alan Grové Creative Ltd. | Dorking | 2023 |
| Alan Hand Car Wash Ltd | Eastleigh | 2016 |
| Alan Harris Engineering Co. Limited | Thorney | 1979 |
| Alan Hartshorn Ltd | Neath | 2020 |
| Alan Heard Engineering Ltd | Fareham | 2013 |
| Alan Heckman Facilitation and Training Ltd | Manchester | 2015 |
| Alan Hennessey Accountants and Tax Advisers Limited | Benfleet | 2017 |
| Alan Hester Associates Limited | Princes Risborough | 2004 |
| Alan Hewitt Consulting Services Ltd | Watford | 2017 |
| Alan Higgs Architects Limited | St. Albans | 2021 |
| Alan Hill & Co Ltd | Haywards Heath | 2011 |
| Alan Holmes Building Surveying Services Limited | Whitley Bay | 2002 |
| Alan Howard Limited | Dereham | 1994 |
| Alan Howarth & Associates Ltd | Haslemere | 1999 |
| Alan Howey (M & E Design) Limited | Newcastle Upon Tyne | 2017 |
| Alan Hurst Engineering Limited | Bexhill-On-Sea | 2012 |
| Alan Hutchison Photography Ltd | Stirling | 2011 |
| Alan Ibbotson Consultancy (Cornwall) Ltd | St Austell | 2014 |
| Alan J Bateman Surveyors Ltd | Eccleshall | 2020 |