Commuters were struggling to get to work on Thursday, August 6, as the Tube network was brought to a halt again by striking union members.

Those who could decided to work at home, leaving places like Canary Wharf, quieter than usual. But others were forced on to buses and roads, although the summer holidays meant the problem was not so pronounced as the strike in July. Spots of rain added to the misery.

About 250 extra buses have been laid on but people also took to their cars, adding to congestion, while the Thames Clippers service ran extra services.

There are serious delays at the Blackwall tunnel, North Circular, and the A13 from the east through to the Limehouse Link and on to the City.

The DLR and Overground are running normal services but are expected to be busy. Travel ambassadors are standing at travel hubs handing out advice and walking maps but already places like Liverpool Street station are seeing long queues for buses.

The strike by four rail unions – RMT, Aslef, Unite and TSSA – centres on pay and conditions for the introduction of the Night Tube on four lines, including the Jubilee line, planned for September 12.

Aslef general secretary Mick Whelan said: “The Tube driver works intensively in very awkward conditions. It affects their health, work-life balance and they don’t have the best of lives.”

The unions have hinted that this action won’t be the last and there may be an escalation of the dispute in the run-up to launch.

LU’s chief operating officer Steve Griffiths said: “We’ve recruited 500 additional staff specifically to run the Night Tube and that’s across stations and train operators.

“No-one’s being asked to work extra hours. We’ve also committed that our train operators will have the same number of weekends off today as when they do Night Tube.”

It appears increasingly likely that the September 12 date may not be met with the Mayor of London Boris Johnson declaring he’s “not fussed” when it starts as long as it is in the autumn.

Canary Wharf workers leave the estate early on Wednesday

He told BBC London's Breakfast Show he would not get involved in the dispute.

He said: "It is it is total nonsense to say I haven't met the union leadership. Over the years I have met them many times but what I won't do is sit down and negotiate with them when they are holding a gun to Londoners heads."