Former Conservative MP Heidi Allen says she has joined the Liberal Democrats as it was the party that was "more in the centre-ground, more positive and more progressive" in politics. <br /> <br />The South Cambridgeshire MP left the Tory party in February, primarily over its Brexit policy. Report by Alibhaiz. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn
