Strikes, hooliganism, IRA bombings and the most atrocious haircuts of the last 50 years. The 1970s do appear to be a dark time in Britain’s history.

While whole counties were subsumed by concrete, roundabouts, and subways (assisting the burgeoning mugging industry), power cuts reduced the nation to women shopping in candlelight and, god forbid, actually having sex with their husbands.