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- A & D DUNCAN LTDDisolved- 06238398 - Dissolved on 11 October 2022 
- DUNCAN M LTD- SC037178 - Incorporated on 18 January 1962 
- DUNCAN 1000 LTDActive - Proposal to Strike off- 08738680 - Incorporated on 18 October 2013 
- P & J DUNCAN LTDDissolved- 09292810 - Dissolved on 6 August 2019 
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