Billiebob is of course correct - an aspect of the night/CPL thing that had escaped me.
Given your CPL at Dundee, guess that means that you can't tag the night flying on to that course.
Checked with Pik ATC and there are no restrictions on night circuits. I guess that means you could bash the circuit over here very late/very early.
Try the Flight Centre first. If no joy there then PM me if you're stuck.
Good luck