| ALGOL C | 1981 | Numerical Scientific | True ALGOL60s | United Kingdom | Cambridge educational Algol 60 |
| COPAS | 1981 | On-Line | Pascals | United Kingdom | Conversational Pascal |
| Cospol | 1981 | Multi-purpose | United Kingdom | Dialect of CSP | |
| DL1 | 1981 | United Kingdom | |||
| ITL | 1981 | United Kingdom | |||
| KRC | 1981 | United Kingdom | Kent Recursive Calculator | ||
| MIN0 | 1981 | United Kingdom | |||
| NEPAL | 1981 | United Kingdom | |||
| PASCAL/M | 1981 | Multi-purpose | Pascals | United Kingdom | Pascal with Modula Modules |
| PS-ALGOL | 1981 | Numerical Scientific | True ALGOL60s | United Kingdom | Persistent Algol |
| RBCSP | 1981 | United Kingdom | |||
| Relational Language | 1981 | United Kingdom |