All Tube lines open on second day of strike

• London Underground says 52% of Tube services are operating today
• Around 80% of stations are open, more than yesterday
• Around 90% of the usual number of Oyster cards were used on overall TfL network this morning

There are more transport problems in the capital because of fog this morning.

TfL suspended ferry services on the Thames because of poor visibility, saying Thames Clipper tickets were being accepted on local buses and Docklands Light Railway.

London City Airport in Docklands also reported delays to flights due to poor visibility.