The network is close to maximum capacity with 35 degrees above ground and much higher below. And there's also a trespasser on the line - a terrified German Shepherd.
How TfL took on the responsibility of ensuring King Charles' coronation ran as smoothly and safely as possible. Plus the temporary revival of an art deco Piccadilly line train.
The fare evasion team scour the network for suspected persistent fare evaders, and on the weekend of the Notting Hill Carnival there are reports of a fire at King's Cross station.
Among the many challenges of keeping London on the move are a train strike on FA Cup final day, a points failure at Baker Street, and thousands of Billy Joel fans at Hyde Park Corner.
TfL staff can't let their guard slip on a hot July weekend as they contend with threatened assaults, lost children, fare evaders, and one of the biggest parties in the country - Pride.
London's 13 professional football clubs present a huge logistical challenge particularly when the season's final Premier League matches kick off simultaneously.
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