Michael Fallon, the defence secretary, has claimed British towns are being “swamped” by immigrants and their residents are “under siege”, in an escalation of the emotive language being used by Tory ministers calling for a renegotiation of the UK’s relationship with Europe. In terms reminiscent of Margaret Thatcher in the 1970s, he said on Sunday that in some areas of the UK, large numbers of migrant workers and foreign people claiming benefits should be subject to some form of restraint – or risk dominating the local population. “In some areas of the UK, down the east coast, towns do feel...