| ALGOL 68-RT | ⊕ 1979 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL68s | ⊕ United Kingdom | Parallel ALGOL 68-R |
| ATOL | ⊕ 1979 | ⊕ United Kingdom | |||
| COSY | ⊕ 1979 | ↓ ↑ ⊕ Specialised Languages | ⊕ Graph | ⊕ United Kingdom | |
| Edinburgh LCF | ⊕ 1979 | ⊕ United Kingdom | |||
| ELLA | ⊕ 1979 | ⊕ United Kingdom | |||
| IC-Prolog | ⊕ 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ Horn clause | ⊕ United Kingdom | |
| LIMP | ⊕ 1979 | ⊕ United Kingdom | Language for Implementing Messages and Protocols | ||
| LIMPET | ⊕ 1979 | ⊕ United Kingdom | Subset of LIMP | ||
| REXX | ⊕ 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ United Kingdom | ||
| RS Algol | ⊕ 1979 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL68s | ⊕ United Kingdom | |
| S-Algol | ⊕ 1979 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United Kingdom | St Andrew's Algol |
| SUPERMAC | ⊕ 1979 | ↓ ↑ ⊕ String and List Processing | ⊕ United Kingdom | Embeddable macroprocessor |