- O'BRIEN S &CO LTDActive - Proposal to Strike off- 10281627 - Incorporated on 15 July 2016 
- O’BRIEN PM LTD- 15405176 - Incorporated on 11 January 2024 
- Jonathan William, Mr. O'BRIEN- Born May 1961 - The Bus Station Bransty Row, Whitehaven, England, CA28 7XE 
- NIC O'BRIEN LTDDisolved- 14427080 - Dissolved on 26 March 2024 
- SUE O'BRIEN LTDDissolved- 08253402 - Dissolved on 4 December 2018 
- O'BRIENS EA LTDDissolved- 10201503 - Dissolved on 5 November 2019 
- TL O'BRIENS LTDLiquidation- NI066619 - Incorporated on 16 October 2007 
- JON O'BRIEN LTDDissolved- 05841104 - Dissolved on 16 October 2012 
- TOM BRIEN LTDDissolved- 07441589 - Dissolved on 7 May 2019 
- TOM O'BRIEN LTD- 13811412 - Incorporated on 21 December 2021 
- Richard, Mr. LEE- Born April 1950 - 19-20th Floor 38 Rose Street, Kowloon, Hong Kong 
- Richard, Mr. DAO- Born November 1963 - 59 Claremont Road, London, United Kingdom, E7 0QA 
- Richard, Mr. FRY- 140 Tachbrook Street, London, England, SW1V 2NE 
- DR. COLM O'BRIENActive - Proposal to Strike off- NI605394 
- O'BRIEN NDT LTDDisolved- 07607804 - Dissolved on 6 September 2022 
- JOE O'BRIEN LTD- 12183141 - Incorporated on 2 September 2019 
- BRIENNE LTDDisolved- 14147731 - Dissolved on 16 April 2024 
- BRIENOU LTDActive - Proposal to Strike off- 13387120 - Incorporated on 11 May 2021 
- R.J. O'BRIEN (EUROPE) LIMITED- 07432813 - Incorporated on 8 November 2010 
- JON RICHARD O'BRIEN- Born December 1952 - UNITS 102-104 WHOLESALE FRUIT CENTRE ALBERT CRESCE, BRISTOL, ENGLAND, BS2 0YP