On behalf of Billy who sent in an email:-
I saw a Hawk / Falcon like bird. It's chest and back were reddish in colour and it had a broad black tail. It was white / beige underneath. It was slightly larger than a crow because a crow was perched a few feet away from it. I never got a photograph. It had a quick winged flight when it flew away.
Location: Dunfermline, Fife
If you have any ideas what it might be, I'd be interested to know.