- DAVID O'BRIEN- Born July 1938 - BROOKFIELD, TUNSTEAD MILTON WHALEY BRIDGE, STOCKPORT, CHESHIRE, SK12 7ER 
- DAVID O'BRIEN- Born March 1963 - 49 CAMPHILL ROAD, WOOLTON, LIVERPOOL, L25 7UF 
- DAVID O'BRIEN- Born November 1953 - 169 HAMILTON ROAD, GLASGOW, NORTH LANARKSHIRE, G32 9QT 
- DAVID O'BRIEN- Born September 1961 - 33A WOODVALE ROAD, BELFAST, COUNTY ANTRIM, BT13 3BN 
- DAVID O'BRIEN- Born June 1979 - 34 ST. HILDAS ROAD, HARROGATE, ENGLAND, HG2 8JY 
- DAVID O'BRIEN- Born March 1984 - 11A LANFREY PLACE, WEST KENSINGTON, UNITED KINGDOM, W14 9PY 
- DAVID O'BRIEN- 6 CATHKIN CLOSE, LEICESTER, ENGLAND, LE3 6PW 
- DAVID O'BRIEN- Born February 1965 - 10100 W. INNOVATION DRIVE, SUITE 300, MILWAUKEE, WISCONSIN, USA, 53226 
- DAVID O'BRIEN- Born January 1969 - AT THE UNIVERSITY OF SUSSEX, FALMER, BRIGHTON, BN1 9RE 
- David O'BRIEN- Born August 1969 - 24 Heron Close, Worcester, Worcestershire, England, WR2 4BW 
- DAVID O'NEIL WELL SERVICES LIMITEDDissolved- SC350755 - Dissolved on 3 August 2012 
- DAVID NEILSON AGENCIES LIMITED- SC097810 - Incorporated on 13 March 1986 
- DAVID O'BRIEN- Born July 1950 - HAVERS HOUSE HAVERS HILL, EASTFIELD, SCARBOROUGH, NORTH YORKSHIRE, ENGLAND, YO11 3BS 
- David O'BRIEN- Born July 1960 - 37 Albyn Place, Aberdeen, Aberdeen City, United Kingdom, AB10 1YN 
- DAVID O'BRIEN- Born November 1961 - 7 LENZIE ROAD, STEPPS, GLASGOW, SCOTLAND, G33 6DY 
- DAVID O BRIEN- Born September 1960 - 50 GUILLEMOT WAY, AYLESBURY, BUCKINGHAMSHIRE, HP19 3WJ 
- DAVID O'BRIEN- Born January 1948 - 54 WOLVERHAM ROAD, ELLESMERE PORT, CHESHIRE, CH65 5BX 
- DAVID O'BRIEN- Born October 1974 - 11 WOODLAND AVENUE, BURBAGE, HINCKLEY, LEICESTERSHIRE, LE10 2BD 
- DAVID O'BRIEN- Born December 1982 - UNIT 4 VISTA PLACE COY POND BUSINESS PK, INGWORTH ROAD, POOLE, DORSET, UNITED KINGDOM, BH12 1JY 
- DAVID O'BRIEN- THE CLUB HOUSE, LADYTHORN ROAD, BRAMHALL, CHES, SK7 2EY