Passengers stuck on trains and platforms in sweltering heat after fire alarm

The morning commute is off to a sticky start today – and not only because of the hot weather (Picture: In Pictures/Getty Images)

Tube passengers should brace for delays as a fire alert wreaks havoc on journeys on one of the hottest days of the year.

Londoners rushing to work on the Tube this morning are caught in delays after a triple whammy of a fire alert, a faulty train and a points failure.

While the alert was found to be a false alarm, trains were affected on the Hammersmith & City and Northern lines.