We've recorded the temperature onboard a 38 bus between Grays Inn Road/Holborn and Essex Road, Islington this afternoon. Our Political Correspondent Simon Harris's tweets accompany each image.
On Friday, the Mayor Boris Johnson promised to fix the problem, and Transport for London claimed an 'army of engineers' would work throughout the weekend to get the air conditioning working.
But many commuters have complained that the top deck of the new bus for London is still "unbearable"
More top news
A baby dolphin has been spotted swimming in the Thames near Embankment pier.
The Olympic champion released a statement after a newspaper alleged his American coach may have broken anti-doping rules.
Five hurt after a car crashed into a group of pedestrians in south London.