South West Trains say a problem at a level crossing between Barnes and Richmond means all lines will be blocked and services disrupted until around 6.30pm.
More top news
Alerts remain in place today after parts of London were flooded by tidal surges.
A man who hit a 13-year-old boy leaving him bedbound for life has been jailed for three years.
The killer's solicitor has written to police challenging them to prove his confession.