SR Class 4Lav
The Southern Railway (SR) gave the designation 4Lav to the electric multiple units built to work the semi-fast services on the route between London and Brighton. None of these units survived long enough in British Rail ownership to be allocated a TOPS class.
| SR Class 4Lav | |
|---|---|
| In service | 1932-1969 |
| Manufacturer | Southern Railway |
| Formation | power car + 2 trailer cars + power car |
| Operator | Southern Railway and British Railways |
| Specifications | |
| Engine(s) | 4 x 275 hp traction motors total 1,100 hp (821 kW) |
| Braking system(s) | Air |
