Train services hit by snow and freezing temperatures
Journeys into work were disrupted on Monday morning with Southeastern and Southern train services both hit by the bad weather.
Freezing temperatures and evening snowfall also meant the C2C was running a reduced service and the Overground was closed between Surrey Quays and Clapham Junction.
First Capital Connect trains to London, meanwhile, suffered problems after a vehicle hit a bridge.
Delays were reported on most Tube lines, including the Jubilee, at morning rush hour but only the Metropolitan line had problems by mid-morning.
The DLR was running without delays.
London City Airport said it was in operation but experiencing disruptions and cancellations to some flights. Passengers are urged to contact their airlines before beginning their journeys.
The Met Office has put out a severe weather warning for London for the next two days.
Snow is expected on Monday afternoon, with temperatures expected to drop to -3C in the evening.