| British Rail Class 401 | |
|---|---|
| Specifications | |
| Braking system(s) | Air |
TheSouthern Railway (SR) gave the designation2Bil to theDCthird railelectric multiple units built during the 1930s to work long-distance semi-fast services on the newly electrified lines from London to Eastbourne, Portsmouth and Reading. This type of unit survived long enough inBritish Rail ownership to be allocatedTOPSClass 401.
