For glass-half-full passengers, the fact that fog has struck for a second day affecting flights from London City Airport might come as a blessing – save them having to attempt to reach the Docklands hub in the middle of a DLR strike.

For the second day running, mist and low cloud have affected services from LCY, with the airport advising passengers to contact their airline before travelling.

But river boat services, including the Thames Clippers and Woolwich Ferry are working, with the Clippers offering more services to handle displaced DLR traffic.

East London commuters face an unfamiliar journey this morning as the DLR is generally immune from industrial action that dogs the Tube network. Find out here how to get around.

London City Airport Docklands Light Railway station

The problem is exacerbated because of the World Travel Market at Excel which is one of the network’s busiest times of the year, usually with extra services laid on. Find out here how to get Excel for WTM15.

The DLR is used by up to 300,000 people a day heading to Canary Wharf and the City.

Those people will now attempt to use buses and the Tube and TfL has warned that the Jubilee, Central, District and Hammersmith & City lines in east London, and London Overground trains between Highbury and Surrey Quays are expected to be much busier than usual.

Rory O’Neill, TfL’s Director of DLR, said: “We have put on extra buses, on existing bus routes, that operate along the DLR route and staff will also be available to help.

"Other TfL services are operating but will be busier than normal particularly at key interchanges with the DLR network. We ask customers who are able to, to consider avoiding the busiest times if they can.”

Drivers have been advised to take extra care as the fog has reduced visibility and there may be more congestion as people try to come to work by car.

The transport union RMT called on its members to strike on the back of a 92% vote to address “abuse of procedures and the adoption of a wholly cavalier attitude to the issues of risk assessment, and the safety and security of both staff and the travelling public”.

Kevin Thomas, managing director of Keolis Amey Docklands, said: “It is extremely frustrating that RMT appear intent on proceeding with strike action rather than seeking resolution to the issues. Such action will cause unnecessary disruption for our passengers, which I believe is avoidable.”

London airports hit by fog

Heathrow and Gatwick airports warned flights could again be affected with departures delayed and cancelled because of air traffic restrictions.

The London hubs are still dealing with the backlog of passengers from two days of disruptions.

Heathrow Airport said on Twitter: "Following yesterday's heavy fog, the Met office has issued another fog warning for this morning. If you are due to fly today, please check your flight status with your airline before travelling to Heathrow."

Gatwick also tweeted: "There may be some disruption to flights due to the fog. Please check directly with your airline."

Some 129 flights - equivalent to 10% of departures - were cancelled at Heathrow on Monday because of air traffic restrictions caused by low visibility.

London City Airport was closed for flights until around 11am on Monday, while Gatwick, Manchester, Liverpool John Lennon, Glasgow, Belfast and Southampton airports were also affected.