| David O'BRIEN | secretary | at Concept I.T. Consultancy Limited | · Liverpool |
| David O'BRIEN | director | at Gas-Elec Services LTD | · Liverpool |
| David O'BRIEN | director | at Abs North West Limited | · Liverpool |
| David O'BRIEN | director | at Auto Electronic Services LTD | · Liverpool |
| OBrien David | Member | at Sefton Building Company Limited | · Liverpool |
| Michael David O'BRIEN | director | at Liverprinting.Co.UK | · Liverpool |
| David Peter O'BRIEN | director | at Your Move Live Limited | · Liverpool |
| David Obrien | secretary | at Anfield Financial Services Limited | · London |
| David Obrien | director | at N&p Personal Loans Limited | · London |
| David O'BRIEN | director | at Digital Technical Services Ltd. | · Glasgow |
| David Obrien | managing director | at Digitol Document Solutions | · Glasgow |
| David O'BRIEN | director | at Digital Solutions Technology Limited | · Glasgow |
| David O'Brien | Member | at Bramhall Glass | · Stockport |
| David O'Brien | Construction | at Birmingham Powder Coatings Ltd | · Portsmouth |
| David O'BRIEN | director | at Plus Interiors Limited | · Birmingham |
| David O'BRIEN | director | at D O'BRIEN Electrical Limited | · Sheffield |
| David O'BRIEN | director | at Institute of Development Studies | · Brighton |
| David O'BRIEN | director | at Complete Fixing Solutions Limited | · Birmingham |
| David O'Brien | Human Resources | at Carwood Smith Limited | · London |
| David Obrien | director | at ASDA Group Limited | · Leeds |
| David Obrien | Managing Director and Co. Sec. | at Cdo Electronics Ltd. | · London |
| David O'BRIEN | director | at Hi-Tech Living Limited | · Hoylake |
| David O'BRIEN | director | at Lopax Limited | · Newcastle upon Tyne |
| David Obrien | secretary | at C.A.S. Autolarm Limited | · Ilford |
| David O'Brien | Computer & Network Security | at Nordhavn Europe Limited | · Southampton |
| David O'Brien | Service Delivery and Operations Direct. | at Pinacl Solutions (UK) Ltd | · St Asaph |
| David O'BRIEN | secretary | at Permira Co-Investments Limited | · London |
| David O'BRIEN | director | at Castle Pvcu Limited | · St Helens, Merseyside |
| David Obrien | director | at C.A.S. Stenning Limited | · Brighton |
| David O'Brien | secretary | at ELF Productivity Ltd | · Wigan |
| David O'Brien | Member | at Elf Productivity Ltd | · Wigan |
| David O'BRIEN | director | at Elf Computer Services Limited | · Appley Bridge |
| David O'BRIEN | secretary | at Permira Advisers LLP | · London |
| David O'Brien | Legal Services | at Penningtons Manches LLP | · London |
| O'Brien David | Member | at Richard Green Golf Within Bramhall Golf Club | · Stockport |
| David O'Brien | Executive Chairman | at Rocsearch UK Ltd | · London |
| David O'BRIEN | director | at Cambridge Academy of Advanced Studies LTD | · London |
| David O'Brien | Construction | at BDP (Building Design Partnership Ltd) | · Manchester |
| David O'Brien | Information Technology and Services | at 4net Technologies | · Manchester |