- ALLEN AND CO. (U.K.) LTDDisolved- 12930340 - Dissolved on 28 January 2025 
- ROSE ALLEN LTD- 14936698 - Incorporated on 14 June 2023 
- ALLEN RELO LTD- 14077453 - Incorporated on 29 April 2022 
- ALLEN MAIR LTD- 14095633 - Incorporated on 9 May 2022 
- ALLEN FABS LTDDisolved- 14547565 - Dissolved on 21 May 2024 
- ALLEN WWEI LTDActive - Proposal to Strike off- 15516505 - Incorporated on 23 February 2024 
- ALLENJIA LTD- 16116310 - Incorporated on 3 December 2024 
- PHIL ALLEN LTD- 10567091 - Incorporated on 17 January 2017 
- JOHN D. ALLEN LTD- 04750146 - Incorporated on 1 May 2003 
- BLUE ALLEN LTD- 07235399 - Incorporated on 26 April 2010 
- ALLEN CARE LTD- 09525284 - Incorporated on 2 April 2015 
- GARY ALLEN LTDActive - Proposal to Strike off- 09635065 - Incorporated on 11 June 2015 
- ALLENWAY LTD- 08398070 - Incorporated on 11 February 2013 
- PAUL A ALLEN LTDActive - Proposal to Strike off- 08500961 - Incorporated on 23 April 2013 
- MIKE ALLEN LTDActive - Proposal to Strike off- SC461167 - Incorporated on 9 October 2013 
- ALLENGEM LTDActive - Proposal to Strike off- 09395972 - Incorporated on 20 January 2015 
- ALLEN HIRE LTD- 12795281 - Incorporated on 5 August 2020 
- ALLENGIE LTDDissolved- 11331249 - Dissolved on 25 June 2019 
- LUCY ALLEN LTD- 11401067 - Incorporated on 6 June 2018 
- ADAM ALLEN LTDActive - Proposal to Strike off- 11421818 - Incorporated on 19 June 2018