- JOHN HOWARTH LIMITEDActive - Proposal to Strike off- 06031866 - Incorporated on 18 December 2006 
- HOWARTH ENGINEERING LTDLiquidation- 08813785 - Incorporated on 13 December 2013 
- SEDDON HOWARTH LIMITED- 08868548 - Incorporated on 30 January 2014 
- HOWARTH SAGE LIMITEDDissolved- 08981701 - Dissolved on 18 June 2019 
- HOWARTH PROPERTIES LTD- 08758259 - Incorporated on 1 November 2013 
- JOHNSTON HOWARTH LTDActive - Proposal to Strike off- 07634439 - Incorporated on 16 May 2011 
- ANGELA HOWARTH LIMITED- 07057577 - Incorporated on 27 October 2009 
- HOWARTH TECHNOLOGY LIMITEDActive - Proposal to Strike off- 09331420 - Incorporated on 27 November 2014 
- HOWARTH HOLDINGS LIMITEDDisolved- 09418264 - Dissolved on 2 February 2023 
- HOWARTH COURT LIMITED- 09104918 - Incorporated on 26 June 2014 
- PETER HOWARTH LIMITED- 05183508 - Incorporated on 19 July 2004 
- EDGE HOWARTH LIMITEDDisolved- 10893542 - Dissolved on 14 June 2022 
- THE HOWARTH FOUNDATION- 10232376 - Incorporated on 15 June 2016 
- HOWARTH HOLLY LIMITED- 11046344 - Incorporated on 3 November 2017 
- HOWARTH FINANCIAL LIMITED- 11122668 - Incorporated on 22 December 2017 
- HOWARTH FUNERALS LTD- 11809795 - Incorporated on 6 February 2019 
- HOWARTH BATHROOM LIMITEDDisolved- 11856815 - Dissolved on 8 August 2023 
- HOWARTH-PATTISON LIMITEDActive - Proposal to Strike off- 12057925 - Incorporated on 18 June 2019 
- HOWARTH ELECTRICAL LIMITEDDisolved- 13294901 - Dissolved on 26 March 2024 
- MR.MR LIMITEDDissolved- 06898238 - Dissolved on 17 December 2013