By John Stevens As Rishi Sunak strode into a warehouse in Teesside on Friday afternoon, he tried to put on a brave face. In front of a crowd of Tory supporters carrying placards, he admitted the local election results were “disappointing”. But he insisted at the General Election voters “are going to stick with us”. At the end of a catastrophic few days that have seen the party lose almost 500 council seats across England in its worst result in 40 years, there are few remaining people who agree. Last night the misery was compounded as Labour pulled off a sensational surprise victory by toppling…