London Overground services were suffering severe delays on Tuesday morning due to an electrical fault at Wembley Central.
Transport for London reported disruption on the Overground between Euston and Watford Junction. National Rail said services were likely to be affected until at least 9.30am.
Meanwhile motorists coming into London from Essex were stuck in an eight-mile tailback on the A13 East India Dock road.Construction work reduced the route into the capital to one lane causing traffic to stack up from the Canning Town flyover back to Rainham.
