I recommend “oi cunt”.

Nice try. I’ll reserve this for after the meeting, or at least when I got a good (or more precisely bad) enough impression of them :-)

Seriously though, mayors and councillors aren’t really high enough in the pecking order to have special terms in the UK

Ah, OK. That could be the reason why I found nothing so far. I was just cautious, as British officials seem to be peculiar when it comes to ranks and titles. Better safe than sorry.

Thanks!