There are severe delays and road closures due to a cement-mixer careering off a railway bridge and hitting a passing train.
The A244 Warren Lane is closed both ways between the A3 and the junction 9 of the M25 at Leatherhead.
Fairoak Lane is also affected both ways between Stokesheath Road and Warren Lane.
Also closed are Steels Lane between Blundel Lane and Warren Lane, Sandy Lane both ways at Warren Lane.
All Southwest train services have been suspended in the area.
The train was heading northbound between Guildford and London shortly after 3pm this afternoon.
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