- JEMMA OLDKNOW- Born November 1967 - ROSE COTTAGE, MAIN STREET GAMSTON, NOTTINGHAM, NG2 6NN 
- JEMMA OLDKNOW- Born November 1967 - ROSE COTTAGE, MAIN STREET GAMSTON, NOTTINGHAM, NG2 6NN 
- Jemma Levine OLDKNOW- Born November 1967 - 2b Park Farm Barns Chester Road, Meriden, West Midlands, England, CV7 7TL 
- JEM MANUFACTURING LTD- 16440210 - Incorporated on 9 May 2025 
- OLDKNOW ACADEMY- 07737582 - Incorporated on 11 August 2011 
- JEMMA LTDDissolved- 08059109 - Dissolved on 7 October 2014 
- JEMMA LTD- 09855189 - Incorporated on 3 November 2015 
- OLDKNOW CONTRACTING LIMITED- 07287188 - Incorporated on 17 June 2010 
- JEMMAT LTDDisolved- 14655986 - Dissolved on 30 May 2023 
- ANN OLDKNOW- Born July 1938 - SOMERSET HOUSE, SAINT PAULS STREET, MORLEY, LEEDS, WEST YORKSHIRE LS279EP 
- KATIE OLDKNOW LTD- 11334193 - Incorporated on 27 April 2018 
- ANN OLDKNOW- Born July 1938 - 19 NEW LANE, LEEDS, WEST YORKSHIRE, LS10 3SG 
- ANN OLDKNOW- 19 NEW LANE, LEEDS, WEST YORKSHIRE, LS10 3SG 
- THE SAMUEL OLDKNOW LTD- 09815086 - Incorporated on 8 October 2015 
- JACK OLDKNOW- Born July 1942 - 4 ALDERLEY AVENUE, LOWTON, WARRINGTON, CHESHIRE, WA3 2QX 
- JEMMAOB LTD- 11996649 - Incorporated on 15 May 2019 
- LEWIS J OLDKNOW LIMITED- 15264689 - Incorporated on 6 November 2023 
- Ann OLDKNOW- 19 New Lane, Leeds, West Yorkshire, LS10 3SG 
- JEMMA JANE'S LTDActive - Proposal to Strike off- 08997434 - Incorporated on 15 April 2014 
- PAUL OLDKNOW- 104 CITY ROAD, DERBY, UNITED KINGDOM, DE1 3RR