John Gray reflects on where British politics goes from here.

"Whether Brexit is a good or bad idea," he writes, "is no longer the central issue that Britain is facing."

"Instead, the question is whether our political system can survive the damage a mishandled Brexit has inflicted on it."

Producer: Adele Armstrong

Correction: The 1975 referendum took place on the 5th June that year on the UK's continued membership of the European Economic Community which it had joined two years earlier.