Reference:
Ogilvie, M, Rare Breeding Birds in the United Kingdom in 1999, British Birds 94(8) (2001).p.354-355 for European Honey-buzzard.
Main points:
Some totals for other raptors:
Red Kite 300 pairs 396 young.
Marsh Harrier 145-164 pairs, 356 young.
Montagu's Harrier 4-11 pairs, 12 young.
Osprey 136 pairs, 183 young.
Hobby 246-553 pairs breeding. England N 3-11: Cheshire 0-6, Lancashire 0-1, Northumberland 2-3, Yorkshire 1. Also: Nottingham 8-13, Shropshire 3-21, Derbyshire 23-27.