| THOMAS KEATING LIMITED | Other manufacturing | 1925 | Total exemption (full) |
| HARVEY & SON (LEWES) LIMITED | Beverages | 1928 | Group accounts |
| THAKEHAM TILES LIMITED | Other manufacturing | 1933 | Total exemption (full) |
| S.M.E.LIMITED | Fabricated metal products | 1946 | Total exemption (full) |
| ADAMS OF RYE LIMITED | Printing and recorded media | 1952 | Total exemption (full) |
| HCD RESEARCH LIMITED | Computers, electronics and optics | 1961 | Total exemption (full) |
| STURGES TOOLING AND PRECISION ENGINEERING LIMITED | Other manufacturing | 1965 | Total exemption (full) |
| RUDGWICK METALS LIMITED | Fabricated metal products | 1980 | Total exemption (full) |
| RAINER SECURITY PRODUCTS LIMITED | Other manufacturing | 1988 | Unaudited abridged |
| BRIGHTON SYSTEMS LIMITED | Computers, electronics and optics | 1991 | Total exemption (full) |
| TESLA ENGINEERING LIMITED | Machinery and equipment | 1993 | Group accounts |