We too had a visitor at the weekend.
Nabbed a pigeon ...
... and picked at it for over an hour ...
It was pretty brutal really but compelling to watch nonetheless. The pigeon was still flapping a bit 45 minutes later and had tried to escape about three times, but it seemed wrong to intervene. Having eaten its fill the sparrowhawk hopped onto the fence to wipe its beak and then into a tree ...
The camera is only a compact and this was on full zoom, without a tripod, in the rain and sh*t light so the images aren't especially crisp.
We decided to leave the carcass and the sparrowhawk has been back to feed at least four times (I assume its the same bird). it was a bit sunnier today so when I get a chance I'll see if the new photos are any better.