British Rail Class 421 Fleet details Fleet details

| Class_ | Type_ | No_built_Converted_ | Year_built_Converted_ | No_range | Withdrawn |
|---|---|---|---|---|---|
| Class 420 | 4Big | 18 | 1965-66 | 7031-7048 | 1986 |
| Class 420 | 4Big | 10 | 1970 | 7049-7058 | 1988 |
| Class 421 | 4Cig | 36 | 1963-66 | 7301-7336 (later 1101-1136) | 1993 |
| Class 421 | 4Cig | 102 | 1970-74 | 7337-7438 (later 1201-1300) | 1993 |
| Class 421 | 8Mig | 2* | 1983* | 2601–2602 | 1983 |