- STEPHEN CALVERT LTDActive - Proposal to Strike off- 11474828 - Incorporated on 20 July 2018 
- CALVERT CONSULTING LIMITED- 11524520 - Incorporated on 20 August 2018 
- CALVERT & RUSSELL LTD.- 03393157 - Incorporated on 26 June 1997 
- TERRY CALVERT LIMITED- 05361482 - Incorporated on 11 February 2005 
- DENISE CALVERT LIMITED- 06557280 - Incorporated on 7 April 2008 
- CALVERT PROJECTS LTDLiquidation- 08147538 - Incorporated on 18 July 2012 
- CALVERT SOLUTIONS LTD- 08165606 - Incorporated on 2 August 2012 
- ELAINE CALVERT LIMITED- 04463316 - Incorporated on 18 June 2002 
- HASLAM & CALVERT LIMITED- 04444417 - Incorporated on 22 May 2002 
- CALVERT ELECTRICS LIMITEDActive - Proposal to Strike off- 08778923 - Incorporated on 18 November 2013 
- HILLCROFT CALVERT LTD.Active - Proposal to Strike off- 09258372 - Incorporated on 10 October 2014 
- CALVERT TRAINING LTDActive - Proposal to Strike off- 08495726 - Incorporated on 19 April 2013 
- JACKSON CALVERT LIMITED- 09534765 - Incorporated on 9 April 2015 - Bennett Corner House, 33 Coleshill Street, Sutton Coldfield, B72 1SD 
- CALVERT SPORTING LIMITED- 10267155 - Incorporated on 7 July 2016 
- CALVERT ARCHITECTURE LIMITED- 10291570 - Incorporated on 22 July 2016 
- CALVERT SERVICES LIMITED- 12144610 - Incorporated on 7 August 2019 
- CALVERT & STARKEY LIMITED- 12273275 - Incorporated on 21 October 2019 
- CALVERT BATESON LIMITED- 13644796 - Incorporated on 27 September 2021 
- CALVERT PROPERTIES LIMITED- 14792937 - Incorporated on 11 April 2023 
- CALVERT DEVELOPMENTS LIMITEDregistered- OE008304 - Incorporated on 15 December 2022