- P HAYDON COMMUNICATIONS LIMITED- 14662997 - Incorporated on 14 February 2023 
- HAYDON COUNTRY STORES LIMITED- 01840568 - Incorporated on 14 August 1984 
- HAYDON DEVELOPMENT COMPANY LIMITED- 02145748 - Incorporated on 8 July 1987 
- JAMES HAYDON RACING LIMITEDDissolved- 03493820 - Dissolved on 22 June 2010 
- HAYDON HILL ADVISORS LIMITED- 07288310 - Incorporated on 17 June 2010 
- HAYDON WHITE TESTING LIMITED- 08648767 - Incorporated on 13 August 2013 
- HAYDON INVESTMENT MANAGEMENT LTD- 08795573 - Incorporated on 29 November 2013 
- HAYDON FINCH CONSTRUCTION LIMITED- 12614213 - Incorporated on 20 May 2020 
- HAYDON CONSTRUCTION SERVICES LTD- 10775058 - Incorporated on 17 May 2017 - 2 Clove Crescent, East India Dock, London, E14 2BE 
- MR & MRS CAFE LTD- 15977769 - Incorporated on 25 September 2024 
- MR & MRS GABA LTD- 16174315 - Incorporated on 9 January 2025 
- HAYDON BRIDGE PHARMACY LIMITEDIn Administration- 06405061 - Incorporated on 22 October 2007 
- HAYDON ROUSE CONSULTANCY LIMITED- 08208176 - Incorporated on 10 September 2012 - 28 Ridgeway Cliff, Herne Bay, CT6 8JQ 
- HAYDON ACCOUNTANCY SERVICES LIMITED- 11658571 - Incorporated on 5 November 2018 
- HAYDON MEDICAL SERVICES LIMITED- 10184145 - Incorporated on 17 May 2016 
- HAYDON COMPUTER SOLUTIONS LIMITEDActive - Proposal to Strike off- 10494867 - Incorporated on 24 November 2016 
- HAYDON BRIDGE INVESTMENTS LTDDisolved- 15174758 - Dissolved on 14 May 2024 
- HAYDON UTILITY SERVICES LIMITED- 16277261 - Incorporated on 26 February 2025 
- MR & MRS LARK LTDDissolved- 08146557 - Dissolved on 26 November 2019 
- HAYDON & HAGAN CONSTRUCTION LIMITEDLiquidation- 01547747 - Incorporated on 27 February 1981