| Manufacturer | Sector | Year | Accounts type |
|---|---|---|---|
| TDK-LAMBDA UK LIMITED | Computers, electronics and optics | 1959 | Full accounts |
| INVESTACAST LIMITED | Basic metals | 1975 | Full accounts |
| TIVERTON FABRICATIONS LIMITED | Basic metals | 1983 | Total exemption (full) |
| T W INTERNATIONAL LTD | Electrical equipment | 1991 | Total exemption (full) |
| METALTECH PRECISION LTD | Fabricated metal products | 1999 | Full accounts |