Emergency engineering works are also causing disruption on all South West Trains through Wimbledon this morning.
Network Rail says passengers can expect delays of up to 50 minutes - and the following services have been altered until further notice:
- A train shuttle is running between Hampton Court and Surbiton. Customers travelling to London Waterloo will need to change trains at Surbiton.
- A train shuttle is running between Shepperton and Kingston. Customers travelling to London Waterloo will need to change trains at Kingston.
- Services to and from Exeter / Yeovil / Salisbury will terminate at Basingstoke. Passengers should connect with alternative services at Basingtoke.
- Services to and from Dorking are cancelled. Passengers travelling on this route can use Southern services between Dorking and Clapham Junction / London Victoria until further notice.
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Officers were given the touching letter at Brixton Station while they were on a reassurance patrol after yesterday's attack
The 52-year-old had previous convictions for violence but was not on the anti-terror watchlist.
In a statement Charlton Athletic said: Keith was a true hero who will be greatly missed by all the Charlton family and everyone at the club.