Cheltenham races sees thousands of extra passengers arrive - many of whom fancy an early morning tipple - while chaos ensues when a passenger chases a fraudster round the station, accusing him of selling her out-of-date football tickets. In Swindon, the control room staff hear that heavy rainfall might cause flooding and block the mainline to Cornwall - leaving them facing a big decision.

Autumn gets off to a wet start when the roof of Paddington begins to leak during torrential rainfall, and with gales of up to 90mph, Network Rail staff brace themselves as a storm closes in on the UK. A flyaway plastic bag causes a loss of power, trapping three trains and disrupting Paddington's peak service. Mobile operations manager Jane is called out when a van hits a low-level bridge, while British Transport Police in Bristol Temple Meads get more than they bargained for when they search a teenager suspected of using drugs on board a train.