It seems an unlikely thing to happen amid the genteel environs of SW19, but then it's already been a summer of unlikely outcomes.

Which may explain why the All England Lawn Tennis Club has taken steps to prevent any displays of Corbynmania, or any other political expression, during the Wimbledon championships.

The tournament's organisers have issued a strict ban on political slogans during the fortnight, which opens on Monday.

After all, the last thing they want is for cries of "Oh Jeremy Corbyn" to ring out across Centre Court.