- DR DUNCAN LTDActive - Proposal to Strike off- 11086211 - Incorporated on 28 November 2017 
- JR DUNCAN LTDActive - Proposal to Strike off- 11181374 - Incorporated on 1 February 2018 
- ZS DUNCAN LTDDisolved- 13622971 - Dissolved on 18 July 2023 
- DU DUNCAN LTDDisolved- 13745523 - Dissolved on 18 July 2023 
- EZ DUNCAN LTDDisolved- 13877673 - Dissolved on 16 January 2024 
- ON DUNCAN LTDDisolved- 13887270 - Dissolved on 1 July 2025 
- Duncan Robert John, Mr. BAIN- Born July 1989 - 15 Holcroft Road, Harpenden, England, AL5 5BG 
- Duncan Alistair, Mr FINCH- Born November 1965 - Pegasus House Southgate Park, Bakewell Road, Orton Southgate, Peterborough, PE2 6YS 
- Duncan Alistair, Mr FINCH- Born November 1965 - One Coleman Street, London, United Kingdom, EC2R 5AA 
- IVOREX GRUPPE LIMITED- 05902023 - Incorporated on 10 August 2006 
- GE DUNCAN LTD- SC510491 - Incorporated on 9 July 2015 
- KH DUNCAN LTDDisolved- 11481434 - Dissolved on 21 January 2025 
- DUNCAN NZ LTDActive - Proposal to Strike off- 10293552 - Incorporated on 25 July 2016 
- DUNCAN ST LTD- 13897714 - Incorporated on 7 February 2022 
- CK DUNCAN LTDDisolved- NI681472 - Dissolved on 21 March 2023 
- LBC REPAIR LTDLiquidation- 08492839 - Incorporated on 17 April 2013 
- HESTIA DEVELOPMENTS LIMITED- 13436045 - Incorporated on 3 June 2021 
- IVOR JONES ENGINEERING LIMITEDDisolved- 00945239 - Dissolved on 15 April 2025 
- MR&MRS B'S LTDDissolved- 10677155 - Dissolved on 20 August 2019 
- MR&MRS LTDActive - Proposal to Strike off- 12389034 - Incorporated on 7 January 2020