I saw people wandering about town with pints in plastic glasses today, from a shit hole pub in the high street.
That allowed then?
No it's not. That will probably be shut down by the local council if they are on the ball.
My mate runs a pub in London. He had a visit from the cops and the council guy explaining the rules (which the cops later admitted the council guy was making up as he went along). If you sell take out booze, then it has to be in a sealed container, and you have to have signage explaining that it is for home consumption only. The streets around are a no public drinking zone and the pub is expected to police that for 100 yards in either direction. However because the pub isn't breaking any laws, if you get a crowd outside all that will happen is they shut you down for an hour. This is all the council's interpretation, it's not exactly enshrined in the law.
He still doesn't know when pubs are going to open, although he does expect it to be soon. Social distancing rules apply inside, numbers limited and tables specifically set up for 2 metres, only one person in the lavs at a time, table service only. And unless that gets revoked pretty quickly he expects to be bankrupt by Xmas.