- LUKE DAVID HARRIS LIMITEDLiquidation- 12017151 - Incorporated on 24 May 2019 
- DAVID HARRIS INTERNATIONAL LIMITED- 01582648 - Incorporated on 26 August 1981 
- DAVID HARRIS ASSOCIATES LIMITED- 03942995 - Incorporated on 8 March 2000 
- DAVID HARRIS DERMATOLOGY LLP- OC384588 - Incorporated on 22 April 2013 
- DAVID HARRIS & ASSOCIATES LIMITEDDissolved- 07008437 - Dissolved on 26 April 2011 
- DAVID HARRIS INSTALLATIONS LIMITEDActive - Proposal to Strike off- 01870117 - Incorporated on 10 December 1984 
- DAVID @ TEES MRI LIMITEDActive - Proposal to Strike off- 09392679 - Incorporated on 16 January 2015 
- DAVID HARRISON LIMITED- SC031753 - Incorporated on 18 September 1956 
- DR DAVID M JONES MRCVS LTD- 15107831 - Incorporated on 31 August 2023 
- MR DAVID MOORE LIMITEDDissolved- 07205744 - Dissolved on 4 December 2012 
- NEIL HARRISON CONFERENCES LTDDissolved- 03890894 - Dissolved on 21 May 2013 
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- HARRIS DAVIDSON LIMITEDDissolved- 09662058 - Dissolved on 13 December 2016 
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- MR DAVID JOHN CLAPHAM LTD- 11962964 - Incorporated on 25 April 2019 
- NEIL HARRISON COURIER LIMITEDActive - Proposal to Strike off- 08324479 - Incorporated on 10 December 2012 
- MR DAVID ENTERPRISES LIMITEDDissolved- 05897067 - Dissolved on 9 August 2011 
- DAVID NEILSON CONSULTANCY LTD- SC430060 - Incorporated on 9 August 2012 
- MR DAVID GEORGE BARNEY LTDDisolved- 13206712 - Dissolved on 26 July 2022