- FORRESTER FINANCIAL LTDDisolved- 13887834 - Dissolved on 19 March 2024 
- EDWARD FORRESTER LIMITED- 16031305 - Incorporated on 21 October 2024 
- FORRESTER LOWE LTD- 12771041 - Incorporated on 27 July 2020 
- FORRESTER MOSTEK LIMITED- 02765525 - Incorporated on 17 November 1992 
- FORRESTER RESEARCH LIMITED- 03400112 - Incorporated on 8 July 1997 
- N FORRESTER LIMITEDActive - Proposal to Strike off- 05764345 - Incorporated on 31 March 2006 
- FORRESTER SPORTS LIMITED- 04821508 - Incorporated on 4 July 2003 
- FORRESTER STREET LIMITED- 05410799 - Incorporated on 1 April 2005 
- FORRESTER ELECTRICAL LIMITEDActive - Proposal to Strike off- 08667607 - Incorporated on 29 August 2013 
- FORRESTER ASSOCIATES LP- SL019032 - Incorporated on 12 December 2014 
- FORRESTER MANAGEMENT LTDActive - Proposal to Strike off- 12066192 - Incorporated on 24 June 2019 
- FORRESTER GROUP LTDDisolved- 11894140 - Dissolved on 15 August 2023 
- FORRESTER ACCOUNTANTS LIMITED- 09615310 - Incorporated on 1 June 2015 
- FORRESTER COMMUNICATIONS LTDActive - Proposal to Strike off- 10438909 - Incorporated on 20 October 2016 
- FORRESTER CONTRACTS LIMITEDActive - Proposal to Strike off- SC560791 - Incorporated on 17 March 2017 
- FORRESTER WELDING LTDDissolved- 12372301 - Dissolved on 22 June 2021 
- FORRESTER JENKINS LTDDisolved- 12392825 - Dissolved on 1 February 2022 
- FORRESTER PROPERTY LTD- 13276823 - Incorporated on 18 March 2021 
- FORRESTER PROJECTS LTDDisolved- 13097163 - Dissolved on 15 April 2025 
- RYAN FORRESTER LIMITEDDisolved- 14323696 - Dissolved on 6 February 2024