Sir Sadiq Khan is avoiding cleaning up graffiti on the London Underground as it will help him get more money from central Government, TfL insiders have reportedly alleged.

Sources at Transport for London (TfL), have reportedly claimed that the graffiti-covered carriages on London's Bakerloo line are assisting the London Mayor with his goal of receiving a multi-million pound Government handout for new trains.

Speaking of Sir Sadiq's alleged deliberate avoidance of the vandalism, an insider is said to have told The Daily Telegraph: 'Anything that helps make the case for new trains is going to be helpful.

'We would rather the graffiti wasn't happening, obviously. But if this is going to help, we want to replace them and need we need money from the Government to do it'.

It comes after shocking video footage posted online showed fed-up commuters taking matters in their own hands and cleaning up the graffiti.