Train passengers battling the icy blasts to get to work endured more travel misery today.
At Wimbledon in south west London speed restrictions of 5mph had to be imposed, with a number of South West Trains services cancelled and others being altered.
An electrical supply problem meant buses had to run between Oxted in Surrey and East Grinstead/Uckfield in Sussex and there were delays to services between Hurst Green and East Croydon.
Over-running engineering work meant there were delays through Selhurst station in south east London and the same problem meant disruption to East Coast and First Capital Connect services to and from King's Cross station in London.
Replacement buses had to run between New Barnet and Alexandra Palace in north London and journey times in and out of King's Cross were being extended by up to an hour.
More top news
Six fire engines and 35 firefighters are fighting a fire in a storage unit near Heathrow Airport.
A woman was taken to hospital by air ambulance after falling from one of Trafalgar Square's famous lion sculptures.
Police are appealing for help in tracing a family of six who are feared to be travelling to Syria.