I have a pair of P4 calipers, would make a great upgrade for your DD bike, these are for the later forks with 65mm spacing on the forks.
They give greater braking force but nice and progressive as they 4 pad per caliper rather than 2.
As you can see from the pics, they are in great condition with a fair bit of wear left on the pads.
I can bring them to mallory or we can sort out p&p.
£125 ono.
Chris