Passengers travelling between Kingston and Twickenham can expect to have their journeys delayed this morning.
A points failure between Strawberry Hill and Teddington means some lines are blocked.
Train services on South Western Railway running through these stations may be cancelled or delayed as a result.
National Rail has advised that the disruption is expected to last until at least 10am.
This comes on the final day of a four-day strike by RMT union members from SWR, which had already caused a reduced service.
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