- UNDERWOOD ELECTRICAL LIMITED- 06529241 - Incorporated on 10 March 2008 
- LDC UNDERWOOD LIMITEDDissolved- 03654172 - Dissolved on 1 February 2011 
- UNDERWOOD & HUNTER LIMITED- 05814431 - Incorporated on 11 May 2006 
- TAYLOR UNDERWOOD LIMITED- 06555486 - Incorporated on 4 April 2008 
- UNDERWOOD TRAINING LIMITED- 06867320 - Incorporated on 2 April 2009 
- UNDERWOOD DESIGN LIMITED- 06656709 - Incorporated on 25 July 2008 
- UNDERWOOD CONTRACTING LIMITED- 09834326 - Incorporated on 21 October 2015 
- UNDERWOOD DEVELOPMENTS LIMITEDActive - Proposal to Strike off- 09898650 - Incorporated on 2 December 2015 
- ACTIVE UNDERWOOD CICDisolved- 12478916 - Dissolved on 16 April 2024 
- LESLEY UNDERWOOD LIMITEDDisolved- 12569405 - Dissolved on 29 April 2025 
- UNDERWOOD CONSTRUCTION LTDDisolved- 12737309 - Dissolved on 7 March 2023 
- UNDERWOOD RAIL LIMITEDDisolved- 10225766 - Dissolved on 13 December 2022 
- UNDERWOOD TANDY LIMITEDActive - Proposal to Strike off- 10533708 - Incorporated on 20 December 2016 
- WESTON UNDERWOOD LTDDisolved- 13922110 - Dissolved on 22 July 2025 
- JACKMAN & UNDERWOOD LTDDisolved- 14648849 - Dissolved on 16 July 2024 
- UNDERWOOD TRADING LTD- 15786153 - Incorporated on 18 June 2024 
- BOOTH ANNE- 07533926 - Incorporated on 17 February 2011 
- HILL UNDERWOOD LLP- OC440229 - Incorporated on 7 December 2021 
- JOEL UNDERWOOD LTD- 15963410 - Incorporated on 18 September 2024 
- YUZEN ANNEDissolved- 07800371 - Dissolved on 21 May 2013