| John Platt | director | at Platt & Hill Ltd | · Oldham |
| John Platt | director | at Kersal Management Ltd. | · Manchester |
| John Platt | director | at Holdexpert Limited | · Manchester |
| John Platt | director | at Jacksons Poly-Pro Limited | · Manchester |
| John Platt | director | at MPH Windows Limited | · Manchester |
| John Philip Platt | director | at David Moore & Co. Limited | · Oldham |
| David John Platt | director | at Vision Control Systems Limited | · Oldham |
| John Philip Platt | director | at Tranquility Products Limited | · Oldham |
| John Comyn- Platt | Partner | at Platts Solicitors | · Manchester |
| John Richard Platt | director | at Mereda Limited | · Manchester |
| John Anthony Platt | director | at Ciaha Limited | · Salford, Greater Manchester |
| John David Platt | director | at Westholme Mossley Freemasons Hall Ltd | · Mossley |
| Colin John Platt | secretary | at P & T Property Limited | · Stockport |
| John Platt | Individual & Family Services | at Fostering Dimensions Ltd | · Nottingham |
| John Platt | Director | at Kersal Mount Limited | · Sheffield |
| John Platt | director | at Kbim General Nominees Limited | · London |
| John Platt | director | at Eiger Suntime Company Limited(The) | · Hornsea |
| John Platt | director | at Kersal Mount | · Sheffield |
| John Platt | director | at Milton Keynes City Discovery Centre | · Milton Keynes |
| John Platt | director | at Kbim Standby Nominees Limited | · London |
| John Platt | Presenter/Producer | at British Broadcasting Corporation | · Birmingham |
| John Platt | Member | at John Platt | · Ilford |
| John Platt | Product Manager - School Audit | at InVentry | · Leeds |
| John Platt | Member | at Chartwell Finance Management | · Blackpool |
| John Platt | Director | at Platt and Hill Limited | · Keswick, Cumbria |
| John Platt | Member | at Charles Hurst Renault Belfast | · Belfast |
| John Platt | Member | at De La Rue Systems U K | · Knutsford |
| John Platt | secretary | at J J P Solutions Limited | · Preston, Lancashire |
| John Platt | director | at Netquest Corporation Limited | · Preston, Lancashire |
| John Platt | Facilities Management Managing Director | at Edgar Allen Ltd | · Wolverhampton |
| John Platt | Member | at Antech UK | · Fleetwood |
| John Platt | director | at Commerzbank LDN | · London |
| John Platt | employee | at Arnold Clark Manchester Corvette / Maserati / LUXE | · Altrincham |
| John Platt | Member | at Netquest Corporation Limited | · Preston, East Riding of Yorkshire |
| John Platt | Member | at Chartwell Finance Management | · Blackpool |
| John Platt | sales | at Listers Toyota Cheltenham | · Cheltenham |
| John Platt | director | at Newlands (Seaford) Educational Trust | · Guildford |