- MARTIN LOUIS CLARK- Born August 1944 - THE SPINNEY HAZEL ROAD, PARK STREET, ST ALBANS, HERTFORDSHIRE, AL2 2AJ 
- NR KNOWLES LTDDisolved- 13644398 - Dissolved on 4 March 2025 
- KNOWLES EUROPE- 00703640 - Incorporated on 19 September 1961 
- KNOWLESY LTDDisolved- 14916423 - Dissolved on 8 July 2025 
- KNOWLES&CO LTDActive - Proposal to Strike off- 08688416 - Incorporated on 12 September 2013 
- AC KNOWLES LTD- 11899276 - Incorporated on 22 March 2019 
- NZ KNOWLES LTDDisolved- 13760092 - Dissolved on 4 June 2024 
- MARY LOUISE CLARK ASSOCIATES LIMITED- 06009991 - Incorporated on 27 November 2006 
- DR KNOWLES LTD.Liquidation- 05606642 - Incorporated on 28 October 2005 
- BS KNOWLES LTDDissolved- 04926572 - Dissolved on 18 February 2014 
- MV KNOWLES LTDDisolved- 13873143 - Dissolved on 1 July 2025 
- EM KNOWLES LTDDisolved- 13623152 - Dissolved on 18 February 2025 
- DR KNOWLES LTD- 15269998 - Incorporated on 8 November 2023 
- VA KNOWLES LTDDisolved- 13795841 - Dissolved on 6 May 2025 
- SARA LOUISE KNOWLES- Born October 1972 - RATIONAL HOUSE 64 BRIDGE STREET, MANCHESTER, M3 3BN 
- LOUISE EMMA KNOWLES- Born January 1978 - 59 ALMOND AVENUE, LEAMINGTON SPA, WARWICKSHIRE, CV32 6QD 
- XT KNOWLES LTDDisolved- 14069930 - Dissolved on 18 February 2025 
- OB KNOWLES LTDDisolved- 13951177 - Dissolved on 13 August 2024 
- WZ KNOWLES LTDDisolved- 13724618 - Dissolved on 15 April 2025 
- Paul Stuart, Mr. CLARK- Born May 1973 - Airport House Suite 43 - 45, Purley Way, Croydon, Surrey, United Kingdom, CR0 0XZ