The Daily Telegraph reports: “Sir Bill, 80, has spent the greater part of his adult life campaigning for Britain to leave the European Union.”

Eurosceptics have long insisted that any Brexit deal must pass “the Bill Cash test” before they can back it – and with good reason.

Sir Bill, 80, has spent the greater part of his adult life campaigning for Britain to leave the European Union and is recognised as the leading authority in Parliament on European law. Conservative prime ministers have learned to dismiss him at their peril.” Read the article here