Dominic Grieve: As Brexit disaster looms, we must have the courage to retrace our steps

For more than two-and-a-half years we have been following a route, led by the Prime Minister, which is intended to take us out of the EU without undermining our economy or security while honouring the referendum result. But with less than 50 days to go the signs that we have lost our way are all about us. So is the mounting evidence of present and future damage.