- KNOWLES DESIGN LIMITEDDissolved- 03973221 - Dissolved on 27 December 2011 
- KNOWLES SYSTEMS LIMITEDDisolved- 06094377 - Dissolved on 16 May 2023 
- KNOWLES' ENTERPRISE LTDActive - Proposal to Strike off- 06845000 - Incorporated on 12 March 2009 
- RICHARD KNOWLES LIMITED- 04654243 - Incorporated on 31 January 2003 
- KNOWLES CONSTRUCTION LTD.Dissolved- 05809205 - Dissolved on 30 August 2011 
- MURPHY KNOWLES LIMITED- 06663830 - Incorporated on 4 August 2008 
- ERIN KNOWLES LIMITED- 07744655 - Incorporated on 18 August 2011 
- KNOWLES BROTHERS LIMITED- 05922411 - Incorporated on 1 September 2006 
- ELIZABETH KNOWLES LTDDissolved- 05850665 - Dissolved on 28 October 2014 
- ROGER KNOWLES LIMITEDActive - Proposal to Strike off- 05965749 - Incorporated on 13 October 2006 
- BETHANY KNOWLES LIMITEDActive - Proposal to Strike off- 08749178 - Incorporated on 25 October 2013 
- KNOWLES MANAGEMENT LTD- 08854351 - Incorporated on 21 January 2014 
- BRIDGIT KNOWLES LIMITED- 09651069 - Incorporated on 22 June 2015 
- KNOWLES ROOFING LIMITED- 09458728 - Incorporated on 25 February 2015 
- KNOWLES LAND LIMITED- 10582678 - Incorporated on 25 January 2017 
- KNOWLES EXCAVATION LTDDissolved- 11162155 - Dissolved on 25 June 2019 
- SHARON KNOWLES LIMITEDDisolved- 14626110 - Dissolved on 9 July 2024 
- KNOWLES CONSULTING LTD- 15262280 - Incorporated on 6 November 2023 
- PARK KNOWLES LIMITED- 15869181 - Incorporated on 31 July 2024 
- A LOUIS & CO LTDActive - Proposal to Strike off- 06368349 - Incorporated on 12 September 2007