- Nicholas John, Mr. CHAFFEY- Born March 1969 - Clareville House 26-27 Oxendon Street, London, United Kingdom, SW1Y 4EL 
- Nicholas John, Mr. CHAFFEY- Born March 1969 - 10 Bressenden Place, London, United Kingdom, SW1E 5DN 
- CHRIS HASSALL LTD- 04475482 - Incorporated on 2 July 2002 
- HASSALL GROUP LTD- 14751160 - Incorporated on 23 March 2023 
- John Nicholas, Mr. SPINNEY- Born May 1965 - 6th Floor, 65 Gresham Street, London, England, EC2V 7NQ 
- CFN HASSALL LIMITED- 16570420 - Incorporated on 9 July 2025 
- MR NICHOLAS WARDLE FRCS (ORTH) LIMITED- 08690292 - Incorporated on 13 September 2013 
- Nicholas, Mr TYE- Born February 1957 - 6 The Clays, Market Lavington, Devizes, Wilts, United Kingdom, SN10 4AY 
- Nicholas, Mr TYE- Born February 1957 - 6 The Clays, Market Lavington, Devizes, Wiltshire, SN10 4AY 
- JOE HASSALL LIMITEDLiquidation- 07387068 - Incorporated on 24 September 2010 
- HASSALL LAW LIMITED- 08641707 - Incorporated on 7 August 2013 
- HASSALL ENGINEERING LIMITEDDissolved- 06758691 - Dissolved on 15 February 2011 
- HASSALL SERVICES LIMITED- 07436547 - Incorporated on 11 November 2010 
- HASSALL & LUCKING,LIMITED- 00302171 - Incorporated on 24 June 1935 
- HASSALL INVESTMENTS LTD- 08420903 - Incorporated on 26 February 2013 
- MR JOHNSON SOLUTIONS LTD- 15785193 - Incorporated on 18 June 2024 
- JOHN ALBERT HASSALL- Born April 1953 - 40 HOWARD ROAD, CLARENDON PARK, LEICESTER, ENGLAND, LE2 1XG 
- JOHN GRAHAM HASSALL- Born August 1943 - 14 HOLCOMBE LEE, RAMSBOTTOM, BURY, LANCASHIRE, BL0 9QR 
- DENNIS JOHN HASSALL- Born October 1934 - DUDWELL HOUSE, HIGH STREET, ETCHINGHAM, EAST SUSSEX, TN19 7AG 
- IAN HASSALL LIMITEDDisolved- 04734223 - Dissolved on 3 January 2023