- HOWARTH ENTERPRISES LTDActive - Proposal to Strike off- NI633827 - Incorporated on 23 September 2015 
- HOWARTH BRACKIN LIMITED- 09220765 - Incorporated on 16 September 2014 
- HOWARTH CARPENTRY LIMITEDLiquidation- 09076775 - Incorporated on 9 June 2014 
- HOWARTH DIGITAL LIMITEDDisolved- 13509218 - Dissolved on 17 January 2023 
- HOWARTH & WOOTTON LTDDisolved- 14561770 - Dissolved on 4 June 2024 
- HOWARTH BRICKWORK LTD- 15089070 - Incorporated on 22 August 2023 
- HOWARTH CONTRACTING LTD- 15979037 - Incorporated on 25 September 2024 
- HOWARTH PROJECTS LTD- 16539747 - Incorporated on 24 June 2025 
- MR & MRS NIK LTD- 09626652 - Incorporated on 6 June 2015 
- MR AND MRS A LTDActive - Proposal to Strike off- 11538245 - Incorporated on 28 August 2018 
- HOWARTHCO LIMITED- 04583206 - Incorporated on 6 November 2002 
- HOWARTH ARMSBY (UK) LTDActive - Proposal to Strike off- 05457929 - Incorporated on 20 May 2005 
- THE HOWARTH GROUP LTD- 13857160 - Incorporated on 18 January 2022 
- K HOWARTH ESTATES LTD- 14797474 - Incorporated on 12 April 2023 
- MR & MRS VAN LTD- 14374749 - Incorporated on 25 September 2022 
- HOWARTH OF LONDON LIMITED- 00492396 - Incorporated on 7 March 1951 
- MORRELL HOWARTH LTD- 10255799 - Incorporated on 28 June 2016 
- HOWARTH HOMES LIMITED- 02274807 - Incorporated on 6 July 1988 - 20 Riverside Way, Uxbridge, UB8 2YF 
- HOWARTH WINTERBROOK LIMITED- 07285063 - Incorporated on 15 June 2010 
- STUART HOWARTH LIMITEDDissolved- 05713738 - Dissolved on 1 October 2013