But he took time out of his busy schedule to record a video in support of his elder brother who is standing in the Oxfordshire by-election for the Green Party.

In the video he said: "My brother is a very, very caring human being who wants to see the government represent all of the people. Not just the people on top. He wants to see a society in which we do not have massive levels of income and wealth inequality."

Mr Sanders admitted he does not know "a heck of a lot about British politics" but applauded his brother's defence of the National Health Service.