I an email and tweet sent to passengers a senior boss for London Underground said;
Although the strike ends at 18:00, services will remain disrupted until the end of the day. You are advised to complete your journeys by 18:00 today.
Transport for London told ITV News, that extra staff had been drafted in to deal with today's strike. Those extra staff had been brought in from the late shift meaning fewer staff would be on shift as normal.
Most zone 1 stations will remain closed for the evening and are expected to open for the start of service tomorrow morning.