- EL ARMSTRONG LTDDisolved- 13887196 - Dissolved on 9 July 2024 
- XM ARMSTRONG LTDDisolved- 13576907 - Dissolved on 16 January 2024 
- DF ARMSTRONG 7461 LTDActive - Proposal to Strike off- 10511625 - Incorporated on 6 December 2016 
- UG ARMSTRONG LTDActive - Proposal to Strike off- 14041201 - Incorporated on 12 April 2022 
- ARMSTRONG PT LTDDisolved- 15118333 - Dissolved on 11 February 2025 
- AT ARMSTRONG LTD- 15752599 - Incorporated on 31 May 2024 
- ARMSTRONGHOMES LTDActive - Proposal to Strike off- 15143520 - Incorporated on 18 September 2023 
- RO & ARMSTRONG LTDDisolved- SC785458 - Dissolved on 3 December 2024 
- ES ARMSTRONG LTDActive - Proposal to Strike off- 08210949 - Incorporated on 12 September 2012 
- NP ARMSTRONG LTDDisolved- SC713981 - Dissolved on 27 May 2025 
- CE ARMSTRONG LTDDisolved- 13769911 - Dissolved on 11 June 2024 
- KJ ARMSTRONG LTD- NI721604 - Incorporated on 24 September 2024 
- ARMSTRONG MG LLP- OC341781 - Incorporated on 2 December 2008 
- ARMSTRONGGOLD LTD- 12146562 - Incorporated on 8 August 2019 
- ZD ARMSTRONG LTDDisolved- 13740059 - Dissolved on 15 April 2025 
- MJ ARMSTRONG LTD- 13303321 - Incorporated on 30 March 2021 
- CL ARMSTRONG LTD- 14892253 - Incorporated on 24 May 2023 
- XX ARMSTRONG LTDDisolved- 13962022 - Dissolved on 19 March 2024 
- WM. ARMSTRONG'S LTD.- SC203815 - Incorporated on 10 February 2000 
- JH ARMSTRONG LTD- 12164579 - Incorporated on 19 August 2019