The monument to Britain’s greatest war-time leader was covered in graffiti last weekend that said Churchill ‘was a racist’ while a protester attempted to set a union flag on fire on the Cenotaph.

Mr Johnson blasted the ‘absurd and shameful’ attacks on the statue of Churchill and said the UK ‘cannot lie about its history’ as Sadiq Khan was accused of ‘surrendering’ the capital’s streets ‘to the mob’ after he ordered the boarding up of the monument to Britain’s greatest prime minister and the nearby Cenotaph.

Anti-racism protesters tore down a statue of slave trader Edward Colston and rolled him into a harbour on Sunday.