- ANNETTE WILLETT LTD- 13982156 - Incorporated on 16 March 2022 
- M J WILLETT LIMITED- 09532450 - Incorporated on 9 April 2015 
- JAMES WILLETT LTD- 12561641 - Incorporated on 17 April 2020 
- J. N. WILLETTS LIMITEDActive - Proposal to Strike off- 07217570 - Incorporated on 8 April 2010 
- WILLETT UK LIMITEDDissolved- 05254755 - Dissolved on 1 June 2010 
- WILLETT OAKES LIMITEDDissolved- 06889340 - Dissolved on 8 October 2019 
- WILLETT PROPERTIES LIMITED- 05386445 - Incorporated on 9 March 2005 
- WILLETT CATERING LIMITEDActive - Proposal to Strike off- 09003445 - Incorporated on 22 April 2014 
- WILLETT CONSTRUCTION LIMITED- 08252110 - Incorporated on 15 October 2012 
- WILLETT ROAD LIMITEDLiquidation- 06248601 - Incorporated on 16 May 2007 
- WILLETT PROPERTY LIMITED- 11978097 - Incorporated on 3 May 2019 
- WILLETT AVIATION LTDActive - Proposal to Strike off- 14370048 - Incorporated on 22 September 2022 
- WILLETT RADON LTD- 13774890 - Incorporated on 30 November 2021 
- WILLETT ENGINEERING LIMITEDActive - Proposal to Strike off- 12965693 - Incorporated on 21 October 2020 
- H.WILLETTS LOCUM LTDDisolved- 09978779 - Dissolved on 14 February 2023 
- G.A.WILLETTS LIMITED- 00878131 - Incorporated on 29 April 1966 
- C.S. WILLETT & CO. LIMITED- 01340220 - Incorporated on 23 November 1977 
- WILLETTS LIMITEDDisolved- 09711593 - Dissolved on 13 December 2022 
- TONY WILLETTS LTD- 08010631 - Incorporated on 28 March 2012 
- WILLETT BUILDING LIMITED- 06844797 - Incorporated on 12 March 2009