In a letter to the mayor of London, Unite general secretary, Len McCluskey has accused Boris Johnson and his party of wanting to "take on Unite", putting the success of the Olympic Games in "jeopardy" for politically motivated reasons. Len McCluskey has made a final call to meet with Boris Johnson to avoid a total stoppage of bus services beginning this Friday 22 June. If there is no resolution there will be further days of action up to and during the Olympic Games. This is the third time Unite has written to Boris Johnson since September 2011 asking him to intervene. Read the letters here.