A good service is now running on all London Underground lines, except the Metropolitan line which is experiencing minor delays.
Main line trains, however, are still experiencing long delays.
Services affected include First Capital Connect, South West Trains, Southeastern, Southern and Greater Anglia.
Click here for details.
South West Trains has offered to refund customers, after today's wintry weather caused major delays on the railways.
Conditions will improve throughout the day with brighter skies on the menu later, but it'll stay very cold.