Well I'll have first shot at this (not literally, of course) and suggest a juvenile common buzzard
What a beautiful raptor, I'm no expert Rose but my initial guess is Common Buzzard (pale variant) although it's possible it could have a touch of leucism. The colourings can vary between common buzzards from quite dark to the pale variant plumage. Hopefully Robbo or Seymouraves may see this post and give you a definitive answer.
All, thank you for taking the time to respond. I am now a little bit wiser. Rose.
As Hazy says it looks like a pale Common Buzzard,they do vary quite a bit in colour. At this time of year Rough Legged Buzzard sometimes visit the UK but I do not think this bird is a Rough Legged,quite happy to be proved wrong of course.