Writing in the Telegraph, Mr Baron says that the Prime Minister’s “refusal to engage” with 40 of his MPs could “cost him” when it comes to the referendum. “His refusal to meet 40 of his backbenchers – who signed my letter last November requesting a meeting to discuss our concerns – signals No 10 has no intention of pitching for a ‘fundamental change’ in our relationship with the EU. This is a great opportunity missed,” Mr Baron says.