| P. Williamson | Managing Director | at W J Williamson Contractors Ltd. | · Smethwick |
| P. Williamson | Director | at Acorn Financial Ltd | · Fareham |
| P. Williamson | Chief Executive | at Nationwide Building Society | · Bradford |
| P. Williamson | Proprietor | at Bearsted Surfacing Contractors | · Sittingbourne |
| P. Williamson | Member | at Peter Williamson | · London |
| P. Williamson | Director of Personnel | at Barclays Asset Finance Ltd. | · Basingstoke |
| P. Williamson | Director | at Discount Camping | · Basildon |
| P. Williamson | Proprietor | at Haircare | · Matlock |
| P. Williamson | Partner | at Kape Electrical | · Beverley |
| P. Williamson | Member | at Quickprint | · City of London |
| P. Williamson | Director | at Finson Specialist Welding Services | · Doncaster |
| Williamson P. | Member | at Nationwide Building Society | · Brighton |
| P. Williamson | Ear, Nose and Throat | at St Anthonys Hospital | · Sutton, London |
| Williamson P. | Member | at J B Associates | · Metropolitan Borough of Wirral |
| P. Williamson | Partner | at The London Ladies Club | · London |
| P. Williamson | SDM | at The Stone Shop | · Bridlington |
| P. Williamson | Chief Executive | at Nationwide Building Society | · Warrington |
| P. Williamson | SDM | at The Car Surgery Ltd | · London |
| P. Williamson | Member | at Aykroyd & Sons Ltd | · Loughborough |
| P. Williamson | Partner | at Deloitte LLP | · Newcastle upon Tyne |
| P. Williamson | Managing Director | at Midcast Engineering (Wales) Ltd | · Maesteg |
| P. Williamson | Managing Director | at Midcast Engineering (Wales) Limited | · Maesteg |
| P. Williamson | Sales Manager | at Williamson Leisure | · Norwich |
| P. Williamson | Sales Manager | at Williamson Leisure | · Norwich |
| P. Williamson | Sales Manager | at Williamson Leisure | · Norwich |
| P. Williamson | Managing Director | at W.J. Williamson Limited | · Sandwell |
| P. Williamson | Managing Director | at Synchro Systems LTD | · Newcastle, County Down |
| P. Williamson | Member | at The Stone Shop | · Bridlington |
| P. Williamson | Member | at Houseproud of Morningside Ltd - Home Hardware | · Edinburgh |
| P. Williamson | Director | at Learning & Skills Council | · Lincoln, England |
| P. Williamson, | Member | at Wetwang CE Primary School | · Driffield |
| P. Williamson | director | at ZOOK Enterprises | · Sheffield |
| P. Williamson | Proprietor | at Pearldawn LTD | · Ledbury |
| P. Williamson | Managing Director | at Synchro Systems LTD | · Newcastle-under-Lyme |
| P. Williamson | Managing Director | at RD Research | · Norwich |
| P. Williamson | Proprietor | at High Peak Trailers | · Glossop |
| Joy P. Williamson | Director | at Northern Snooker Centre | · Leeds |
| A. P. Williamson | Managing Director | at Lothian Coated Fabrics LTD | · Prestonpans |
| P. G. Williamson | Manager | at Paragon Vintners LTD | · London |