Foley Catheter insertion question

I wanted to ask some UK nurses about the procedure for inserting a foley catheter in either a male or a female. I have read the Royal Marsden but I have to take an OSCE for UK licensure soon and I'm worried that there are some pit-falls hiding in the procedure.

In the US/Canada we would use forceps to clean around the urethra, thus leaving our dominant hand sterile for insertion of the catheter. The non-dominant hand keeps either the member or labia in place for insertion. However, in the Marsden example they simply say "use one hand to hold X and the other to clean. Then insert the foley". My worry is that hidden behind that statement is either a glove change, change in hands, etc...

One thing to point out is that, at least when I was trained, we did not have this idea of "one hand dirty, one hand clean" we used the disposable forceps that come in the tray (both for foley insertion and for dressings) thus you had at least one sterile hand left (for foley insertion) or both sterile (for dressing changes). I was penalised once before for not using this technique. But the way the protocol is written I can't see that I actually have a "clean" hand left after cleansing the area. The simplest solution would seem to be replacing my gloves, which I have seen done in some UK MD videos. But since I will be marked on the "proper" way of doing this I wanted to ask for some advice.