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- NEILMAC. PC.B LTD.- 04604988 - Incorporated on 29 November 2002 
- O'NEIL & SCOTT LTDActive - Proposal to Strike off- 06487329 - Incorporated on 29 January 2008 
- O'NEILL FPSO LTDActive - Proposal to Strike off- 09471044 - Incorporated on 4 March 2015 
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- S S O'NEIL LIMITEDDisolved- 08928896 - Dissolved on 15 August 2023 
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