Useful links:

Heathrow live flight information: http://www.heathrowairport.com/flight-information 
 
Gatwick live flight information: http://www.gatwickairport.com/flights/
 
Luton Airport live flight information: http://www.london-luton.co.uk/en/flights/
 
Stansted live flight information: http://www.stanstedairport.com/flight-information
 
UK live road travel news via the AA:  https://www.theaa.com/route-planner/traffic-news