Newbie and need help with ID

Hi everyone, this is my first post.

I'm very lucky where I live and have so many different birds visit our garden. We see buzzards daily and have even had a sparrowhawk come into the garden (we back onto a woodland).  This afternoon I heard a "keeyoo" sounding call and managed to capture the bird flying overhead. Unfortunately it was too high for a crisp photo, but any help in IDing would be greatly appreciated.