- PROCTOR & WHITTAKER LIMITEDDisolved- 01463060 - Dissolved on 26 July 2022 
- WHITTAKER CONSULTANTS LTDDissolved- 06986786 - Dissolved on 8 January 2013 
- CHARLES WHITTAKER LIMITEDDissolved- 07088436 - Dissolved on 27 December 2011 
- LESLEY WHITTAKER LIMITED- 01750997 - Incorporated on 7 September 1983 
- WHITTAKER FINANCIAL LIMITEDDisolved- 05421812 - Dissolved on 30 November 2023 
- WHITTAKER ACCOUNTING LIMITEDDissolved- 08035729 - Dissolved on 5 November 2013 
- WHITTAKER TRANSPORT LIMITEDActive - Proposal to Strike off- 07735236 - Incorporated on 10 August 2011 
- WHITTAKER & HUNTLEY LIMITEDActive - Proposal to Strike off- 06271869 - Incorporated on 7 June 2007 
- ROB WHITTAKER LIMITEDActive - Proposal to Strike off- 08496711 - Incorporated on 19 April 2013 
- WHITTAKER LADYCROFT LTDActive - Proposal to Strike off- 08793593 - Incorporated on 27 November 2013 
- WHITTAKER ANALYSIS LTDActive - Proposal to Strike off- SC513659 - Incorporated on 21 August 2015 
- WHITTAKER ACCOUNTANTS LTD- 13618034 - Incorporated on 13 September 2021 - 195 Oldham Road, Rochdale, OL11 1 
- WHITTAKER MARKETING LTDDisolved- 14011462 - Dissolved on 5 September 2023 
- LAYNE WHITTAKER LTD- 15399538 - Incorporated on 9 January 2024 
- UNIQUE REBELS UNION LTD- 07799711 - Incorporated on 6 October 2011 
- MARK DONALD LTD- 11613956 - Incorporated on 10 October 2018 
- DONALD LUSH LTDDissolved- 07123629 - Dissolved on 31 January 2012 
- G & S DONALDSON LTD- SC422239 - Incorporated on 19 April 2012 
- DONALD M WOOD LTDDissolved- 07881848 - Dissolved on 30 April 2013 
- M F DONALDSON LTDActive - Proposal to Strike off- 08905245 - Incorporated on 20 February 2014