Thank you everyone for your replies – very informative.
I was booked for 4 days work at an independent over the last month. I asked about payment on the first day and was asked to invoice the practice on the last day that I worked, which I did. This was around a week ago, so I’m not unduly worried yet. However I will start calling if he hasn’t paid by the end of the week I think, as I have effectively already extended him a months credit.
What a minefield!