In reply to slowmotion:
I was sat on a belay on The Wastard a few years back when a Peregrine chick landed in my lap, I got it back in its nest despite being harassed by both adults. Peregrine's are very vocal where Sparrow Hawks tend to be very quiet. Had one come within 2ft of my shoulder last week as it took a Blue Tit off my bird feeder and I only heard a whoosh as it came from behind me.