It's been a week of misery and chaos for rail commuters. Passengers were left stranded again, today, because of cancellations and delays.
The disruption was caused by signalling problems at Slough - and between Twyford and Maidenhead. Routes through Reading station to Paddington were badly affected.
Today, Network Rail apologised for the problems. Cary Johnston talked to Dan Panes of First Great Western - which is likely to get an extension to its franchise.
There are long delays on the Kent-bound M25 between Godstone and Clacket Lane after a a vehicle overturned
Three lanes are closed while recovery work takes place anticlockwise.
Delays of up to one hour on Southeastern between Ashford International and St Pancras International due to over running engineering works.
All lines are affected, Southeastern expect normal service to resume at around 10:00
For rail passengers delays top the list of passenger complaints but now a new scheme could help reduce the chaos they cause.
A new alliance between South West Trains and Network Rail is paying for extra transport police officers to drive emergency engineers to the scene of incidents with blue lights flashing.
The aim is if the engineers get there faster delays and frustration for passengers will be cut.
Our Transport Correspondent Mike Pearse was given exclusive access to join the new squads on patrol.