A member of the public puts himself at risk by running along the tracks, all trains are halted while transport police chase the intruder. The installation of overhead cables and new ticket machines also cause delays.
The heatwave hits the network hard, with signalling equipment out at Didcot, rails in need of stretching in London and even the windscreen wipers are unable to clear all the insects hitting drivers' windows.
British Transport Police mount a special operation to stop criminals running drugs out of London. A cracked rail is discovered at Acton. A passenger falls between train and platform and police talk down a suicidal woman.
A vital piece of track insulating equipment fails throwing services into chaos. Engineers discover rotting wooden sleepers. Staff are shocked when a driver tries to start a train from the wrong end.
It's a tough start to Monday morning as weekend works at Acton have overrun, a lorry rips the safety barriers off a level crossing as it runs the lights, and 'the flying banana' trails the rails for defects.
Huge delays occur after a man is hit by a train at Southall, more chaos ensues when power to the track is accidentally switched off. 100's of rail enthusiasts descend of Paddington to see the Flying Scotsman.
A drunken man on the tracks forces a line closure. Engineers insert 24 huge culverts at Cowley Bridge near Exeter to ease flooding. At Paddington staff have to deal with tricky customers.
The Bank Holiday work schedule is disrupted by reports of a trespasser on the line forcing the cancellation of all trains out of Paddington. That allows engineers to renew parts of the ageing infrastructure.
Staff spring into action when an unexploded WWII bomb is found near the line in Teignmouth, transport police question a man who jumped onto the track to retrieve something he dropped.