|SR Class 4Lav|
|Formation||power car + 2 trailer cars + power car|
|Operator(s)||Southern Railway and |
|Prime mover(s)||4 x 275 hp traction motors |
total 1,100 hp (821 kW)
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.