‘Massive anger’: 40% of grassroots Tories want Boris Johnson to quit

Boris Johnson outside No 10. Conservative associations said members were growing increasingly frustrated and some were leaving the party. Photograph: Paul Childs/Reuters

There is “massive anger” among grassroots Conservative party supporters over the Downing Street parties scandal, the head of a leading group has said as its survey found 40% thought Boris Johnson should resign.

Ed Costelloe, chairman of Grassroots Conservatives, said it had been years since the group last polled its supporters and followers but it felt compelled by the “unique” nature of the public mood.