The Tube: Keeping London Moving

This time the fare evasion team are out scouring London's tube stations tracking down suspected persistent fare evaders. They are suspected of each racking up thousands of pounds in unpaid fares over long periods of time. Poised to pounce, the team study their movements via CCTV, devise a plan and finally approach the suspects in plainclothes.

On the weekend of the Notting Hill Carnival, one of the largest street festivals in the world, around two million partygoers are expected to descend upon the west of the city. Teams are pulled in from all over London's transport network to help support the key stations.

Keeping everyone safe and controlling passenger flow is the priority on the frontline, and at the network Control Centre they must keep a watchful eye over the millions joining the procession, and the rest of the network. But suddenly - could reports of a fire at King's Cross station have a devastating knock-on effect, as it inevitably brings back memories of the 1987 disaster…?

On a boiling hot July weekend TfL staff cannot let their guard slip as they find themselves contending with threatened assaults, lost children and fare evaders on the run among the many millions of passengers travelling through the network of roads, tube and trains.

It's also Pride weekend, and London is hosting one of the biggest parties in the country. One and half million proud folk descend on the capital, many heading for Soho in the heart of the city dressed to the nines, party hats at a jaunty angle and with merry mayhem on their minds. But it's a serious business for TfL staff who have to keep the capital moving when so many people cram into such a small part of the city, flocking from all points of the compass.

London is home to 13 professional football clubs and managing the flow of fans on every match day is a huge logistical challenge, particularly on the one day of the year when the season's final Premier League matches kick off simultaneously. This year the challenge is even greater because tens of thousands of cyclists are descending on the capital for the annual Ride London event, and eight miles of city centre roads are now closed to traffic.

Adding to that, numerous train cancellations due to engineering works and delays caused by track-side incidents add pinch-points and are stretching a system that is on the verge of being seriously overcrowded at any moment. For staff at south-west and south-east London stations exuberant and rowdy supporters bring back bad memories of serious misbehaviour, including staff being pushed off platforms and on to rail-tracks. Will this be another bad year for staff on TfL's front-line?

Altogether less abrasive, but just as excitable, is the experience of DLR staff at Pudding Mill Lane. Here the chances of over-exuberant passengers is guaranteed. But these are voracious ABBA fans going to see a show by the eponymous Swedish pop gods' avatars, delivering their greatest hits, so station staff are more likely to be leading a sing-song than stopping a ding-dong.