More than 200 police officers in Germany have been sent home for bad behaviour, after throwing a wild party that included a couple having sex in public, men urinating in the open, and an officer performing a striptease and dancing with her gun.

The officers in question were on secondment from the Berlin police to help with security at next week’s G20 summit in Hamburg which will bring Theresa May and Angela Merkel together with Donald Trump and Vladimir Putin.

More than 20,000 officers are being drafted into the city, with reserves coming from as far away as Austria and the Netherlands. But the Berlin contingent have been sent home in disgrace after staging a party that seems to have shocked their colleagues.