- BRIAN HOWARTH LIMITEDDissolved- 09072110 - Dissolved on 8 May 2018 
- HOWARTH ELECTRICAL LIMITEDActive - Proposal to Strike off- 09247545 - Incorporated on 3 October 2014 
- ROBERT HOWARTH LIMITED- 09273293 - Incorporated on 21 October 2014 
- HOWARTH TRANSPORT LTDActive - Proposal to Strike off- 08624223 - Incorporated on 25 July 2013 
- HOWARTH LAWLOR LIMITED- 09389563 - Incorporated on 15 January 2015 
- HOWARTH ESTATES LIMITED- 10952628 - Incorporated on 8 September 2017 
- ROBERT HOWARTH LIMITEDActive - Proposal to Strike off- 11834127 - Incorporated on 19 February 2019 
- HOWARTH CONTRACTING LIMITEDActive - Proposal to Strike off- 10322116 - Incorporated on 10 August 2016 
- HOWARTH LANDSCAPES LTD- 13246107 - Incorporated on 4 March 2021 
- HOWARTH HOLDINGS LIMITEDDisolved- 14712739 - Dissolved on 13 August 2024 
- HOWARTH BUILDERS LTD- 15319635 - Incorporated on 30 November 2023 
- HOWARTH DEVELOPMENTS LTD- 13022619 - Incorporated on 16 November 2020 
- HOWARTH HOSPITALITY LTD- 15826049 - Incorporated on 8 July 2024 
- LUKE HOWARTH LIMITED- 16211824 - Incorporated on 27 January 2025 
- JEFF HOWARTH LIMITED- 03792447 - Incorporated on 21 June 1999 
- HOWARTH LIFTING LTDDisolved- 09996780 - Dissolved on 10 May 2022 
- HOWARTH WHOLESALE LTDDisolved- 11494372 - Dissolved on 20 December 2021 
- HOWARTH WAINWRIGHT LTDDisolved- 12644914 - Dissolved on 19 July 2022 
- HOWARTH CONSTRUCTION LIMITED- 05073814 - Incorporated on 15 March 2004 
- HOWARTH JOINERY LTDDissolved- 08172096 - Dissolved on 18 March 2014