- EAMONN O`CONNOR CONSULTANCY SERVICES LIMITEDActive - Proposal to Strike off- 06715109 - Incorporated on 3 October 2008 
- THE O`CONNOR GROUP (BASILDON) LIMITEDLive but Receiver Manager on at least one charge- 06105407 - Incorporated on 14 February 2007 
- OCU UTILITY SERVICES LIMITED- 02916906 - Incorporated on 8 April 1994 
- PROF. COLM O'MORAINActive - Proposal to Strike off- NI605403 - Incorporated on 6 December 2010 
- COLM DOHERTY LIMITED- 09336472 - Incorporated on 2 December 2014 
- COLM MCVEIGH LIMITED- NI634536 
- COLM SECURITIES LTD- 14426522 - Incorporated on 18 October 2022 
- STU O`CONNOR FINANCIAL SERVICES LIMITED- 06348690 - Incorporated on 21 August 2007 
- H A O' CONNOR NG LIMITEDActive - Proposal to Strike off- 10192999 - Incorporated on 21 May 2016 
- PAUL O CONNOR ACCOUNTANCY SERVICES LIMITED- 07439756 - Incorporated on 15 November 2010 
- WILLIAM JOSEPH O CONNOR- Born February 1938 - 4 CLEVES COURT, FIRS AVENUE, WINDSOR, BERKSHIRE, SL4 4EF 
- MICHAEL ANDREW O CONNOR- Born May 1976 - 1 SHOTTISHAM HALL COTTAGES ALDERTON ROAD, WOODBRIDGE, SUFFOLK, UNITED KINGDOM, IP12 3EP 
- SEAN CON O CONNOR- Born July 1973 - 17 BURLEY DOWN, CHANDLERS FORD, EASTLEIGH, HAMPSHIRE, SO53 4NR 
- ANTHONY MICHAEL O CONNOR- Born June 1939 - BOURNEMOUTH SCHOOL FOR GIRLS CASTLE GATE CLOSE, CASTLE LANE WEST, BOURNEMOUTH, DORSET, UNITED KINGDOM, BH8 9UJ 
- PETER JAMES O CONNOR- Born May 1959 - THE ASPEN BUILDING VANTAGE POINT BUSINESS VILLAGE, MITCHELDEAN, GLOUCESTERSHIRE, GL17 0DD 
- STEPHANIE LOUISE O' CONNOR- Born July 1988 - 24 OSWALD ROAD CHORLTON CUM HARDY, MANCHESTER, GREATER MANCHESTER, UNITED KINGDOM, M21 9LP 
- DANIEL ANTHONY O CONNOR- Born June 1964 - 4 MANOR FARM STABLES, OLD KNEBWORTH, KNEBWORTH, HERTFORDSHIRE, SG3 6SL 
- IAN BARRY O CONNOR- PINE VILLA GYPSY LANE, FROME, SOMERSET, ENGLAND, BA11 2NA 
- PETER EDMUND O`CONNOR- 16 BRAMCOTE ROAD, PUTNEY, LONDON, SW15 6UG 
- PATRICK CHARLES O`CONNOR- Born November 1947 - 14001 SARATOGA HILLS ROAD, SARATOGA, 95070, UNITED STATES