- HARRIS & HARRIS BOOKS LIMITED- 16245404 - Incorporated on 11 February 2025 
- HARRIS & HARRIS CONSULTING LIMITEDLiquidation- 08676311 - Incorporated on 4 September 2013 
- HARRIS TWEED HARRIS LTDDisolved- SC666989 - Dissolved on 12 September 2023 
- FORTAS HOMES LTDActive - Proposal to Strike off- 06395248 - Incorporated on 10 October 2007 
- HARRISON & THOMAS PROPERTY SERVICES LIMITED- 06558062 - Incorporated on 8 April 2008 
- MR & MRS SEW 'N' SEW LTD.- 07606830 - Incorporated on 18 April 2011 
- MR&MRS CLEAN LTDDisolved- 13755600 - Dissolved on 16 May 2023 
- MR&MRS STORE LTD- 16474263 - Incorporated on 27 May 2025 
- HARRIS & HARRISON LTD- 11623254 - Incorporated on 15 October 2018 
- NATHAN WATERS LTD- 07354204 - Incorporated on 24 August 2010 
- NATHAN MUIR INT LTD- 07489999 - Incorporated on 12 January 2011 
- LISTON NATHAN LTDActive - Proposal to Strike off- 06333802 - Incorporated on 6 August 2007 
- NATHAN PARKER LTD- 09044695 - Incorporated on 16 May 2014 
- NATHAN ERVIN & CO. LTD.Dissolved- 08279765 - Dissolved on 2 December 2014 
- NATHAN WALTON LTD- 10706422 - Incorporated on 4 April 2017 
- NATHAN CULLEN LTDDisolved- 12647000 - Dissolved on 9 November 2021 
- SURESH NATHAN LTDDisolved- 13273565 - Dissolved on 23 August 2022 
- HARRIS & HARRIS CONSTRUCTION LIMITED- 02591706 - Incorporated on 14 March 1991 
- MR N & MRS M AHMET LTD- 07433317 - Incorporated on 9 November 2010 
- MR AND MRS RAI LTDDisolved- 08886627 - Dissolved on 30 November 2021