| ALGOL 68C | ⊕ 1975 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL68s | ⊕ United Kingdom | Cambridge Algol 68 |
| Algol H | ⊕ 1975 | ↓ ↑ ⊕ Experimental and other | ⊕ True ALGOL68s | ⊕ United Kingdom | Proposed extensions to the mode system of Algol 68 |
| Algol S | ⊕ 1975 | ↓ ↑ ⊕ Numerical Scientific | ⊕ True ALGOL60s | ⊕ United Kingdom | |
| APAL | ⊕ 1975 | ⊕ United Kingdom | |||
| Burge | ⊕ 1975 | ⊕ United Kingdom | |||
| CSL | ⊕ 1975 | ⊕ United Kingdom | |||
| Dakin | ⊕ 1975 | ⊕ Command systems | ⊕ United Kingdom | Generalised Job Control Language | |
| DAP Fortran | ⊕ 1975 | ↓ ↑ ⊕ Numerical Scientific | ⊕ Non Standard FIV | ⊕ United Kingdom | Parallel fortran |
| GINO-F | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ United Kingdom | ||
| MLYACC | ⊕ 1975 | ⊕ Grammar and Syntax-oriented | ⊕ United Kingdom | ||
| MU5 Autocode | ⊕ 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ 3G Autocodes | ⊕ United Kingdom | Autocode for Machester MU5 computer |
| Phoenix | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Command systems | ⊕ United Kingdom | Command language for IBM at Cambridge |
| Pop-11 | ⊕ 1975 | ⊕ United Kingdom | |||
| Simon 75 | ⊕ 1975 | ↓ ↑ ⊕ Specialised Languages | ⊕ Event scheduling | ⊕ United Kingdom | GPSS based Simula dialect |
| SKIMP | ⊕ 1975 | ↓ ↑ ⊕ Multi-purpose | ⊕ Early Autocodes | ⊕ United Kingdom | Teaching subset of IMP |
| SPG | ⊕ 1975 | ⊕ United Kingdom |