today while checking the car over for leaks etc prior to sva on monday, i discovered that i have plumbed the front brake circuit to the S port and the rear to the P circuit. am i right in thinking this is the wrong way round, that's what you get for assuming that the double port on the end is the front circuit like the old one.

I used a Fiesta Mk.1 master cylinder and the front goes to P (primary) and rear to S (secondary) However, this MC is a 50/50 split so it made no difference in my case.
Do you know what ratio yours is? I'm presuming you're using a Westfield supplied one.