- MR.MR. LTDDisolved- 14252327 - Dissolved on 5 December 2023 
- MARK HOWARTH LTD- SC377769 - Incorporated on 29 April 2010 
- PAUL HOWARTH LTDActive - Proposal to Strike off- 10885933 - Incorporated on 27 July 2017 
- G J HOWARTH LIMITEDDisolved- 05067952 - Dissolved on 13 August 2024 
- PETRA HOWARTH LTDDisolved- 11586187 - Dissolved on 11 January 2022 
- MR MR2 LTD- 11218539 - Incorporated on 21 February 2018 
- HOWARTH FLOORS LTD- 12423240 - Incorporated on 24 January 2020 
- JOHN E EDWARDS ARCHITECTS LIMITED- 02050998 - Incorporated on 29 August 1986 
- MARCLU INSTALLATIONS LTDActive - Proposal to Strike off- SC424697 - Incorporated on 23 May 2012 
- WORLD OF SCOOTERS LTDDisolved- 10091081 - Dissolved on 4 July 2023 
- SARAH HOWARTH LTDDisolved- 13703295 - Dissolved on 28 March 2023 
- W J HOWARTH LIMITEDDisolved- 12941280 - Dissolved on 18 July 2023 
- J & S HOWARTH LIMITED- 13525357 - Incorporated on 22 July 2021 
- MR & MR LTD- 16489396 - Incorporated on 2 June 2025 
- MR NEVILLE JOHNSON QA (UK) LIMITEDActive - Proposal to Strike off- 10217322 - Incorporated on 6 June 2016 
- CHIRON TUTORS LTDDisolved- 09863490 - Dissolved on 26 October 2021 
- O HOWARTH LIMITEDActive - Proposal to Strike off- 11582799 - Incorporated on 21 September 2018 
- JAMIE HOWARTH LTDActive - Proposal to Strike off- 11344243 - Incorporated on 3 May 2018 
- R.L. HOWARTH LIMITEDLiquidation- 01179769 - Incorporated on 5 August 1974 
- MR MR LTDActive - Proposal to Strike off- 15533685 - Incorporated on 1 March 2024