I went for a walk past Christchurch in Cheltenham today.
Thanks to Dave Pearce, I knew where the peregrines liked to sit, and sure enough there they were!
I think that these are the female (right) and male (left), and are Christopher Robin's Mum and Dad.
There may well have been a third bird as well, as I am pretty sure that the female was still on the tower when the male was seeing this one off.
(I think I need to save up for a camera with a better lens as my Canon SX230 is getting rather old and has some annoying marks and scratches on the optics.)