Thanks for the comments guys, Bill - it probably is a Crow, come to think of it - at the time I just wrote what I thought it was without really thinking about it !
It was on a nature reserve in Leicestershire and I got bitten by a black fly - or something like that at least, one on the hand which I flicked off and another on my elbow, which also got flicked off - I ran the whole length of a field to get back to my car after that!
But the this shot of the Bird was taken before all that, glad it's "spooky" looking as that was what I thought when I saw it so I tried to capture that.