| Business | Founded | Contacts |
|---|---|---|
| A E A Sonomatic Ltd. | 1978 | 19 |
| Index Data Systems Limited | 1989 | 15 |
| Aea Petroleum Services Limited | 1991 | 8 |
| AEA Technology PLC | 1992 | 232 |
| Fleet Activity Control Technology Limited | 1993 | 17 |
| Br Research Limited | 1996 | 1 |
| Laputa Enterprises Ltd. | 1996 | 11 |
| Tci Management Limited | 1996 | 5 |
| Tci Operational Research Limited | 1996 | 17 |
| Tci Rail Estate Limited | 1996 | 8 |
| Tci Signalling Limited | 1996 | 17 |
| Tci Forecast Limited | 1997 | 9 |
| Nuclear Science Limited | 1998 | 3 |
| Monitor-Pro Limited | 2000 | 11 |
| Future Energy Solutions LTD | 2002 | 4 |
| Accentus PLC | - | 30 |
| U K Atomic Energy Authority | - | - |
| Landrec Ltd. | - | - |
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