| Contractor / consultant | Number of field evaluations recorded 1990-1999 |
|---|---|
| Museum of London Archaeology Service | 836 |
| Oxford Archaeological Unit | 445 |
| Wessex Archaeology | 442 |
| Thames Valley Archaeological Services | 306 |
| AC Archaeology | 262 |
| Hertfordshire Archaeological Trust | 233 |
| Cotswold Archaeological Trust | 229 |
| Surrey County Archaeological Unit | 206 |
| Norfolk Archaeological Unit | 192 |
| Birmingham University Field Archaeology Unit | 189 |
| Canterbury Archaeological Trust | 174 |
| Northamptonshire Archaeology | 161 |
| Lancaster University Archaeological Unit | 142 |
| Pre-Construct Archaeology | 129 |
| Cambridge Archaeological Unit | 124 |
| Geophysical Surveys of Bradford | 123 |
| Suffolk County Council Archaeological Service | 122 |
| Archaeology South-East | 107 |
| Suffolk County Council Archaeological Section | 104 |
| Northern Archaeological Associates | 103 |
Table 3: Summary of the top twenty archaeological contractors carrying out field evaluations in England between 1990 and 1999, ordered in terms of the number of reports recorded by the AIP, after Darvill and Russell (2002) Table W16.