Having sex with someone you don't live with is illegal from today

manchestereveningnews.co.uk:

Thanks to new lockdown rules, from today, anybody caught having sex at home with somebody who doesn't live there could land themselves with a criminal record.

As part of a new government rule, it is now illegal to get intimate with someone from a different household. Meanwhile, people are able to gather in groups of up to six in public places (sex in public is definitely still illegal, by the way).

Up until now the person visiting a house for sex would have been the one in breach of the measures. But now both people would be able to be prosecuted under the law with Amendment Regulations being introduced in Parliament on Monday.