Thankyou Colhig and all.

I have looked up Sparrowhawks on the net and after looking at pics, I really cannot say whether or not it was one of those. I think not though, but, I did not see it head on. I was behind it and did not see a white/light chest, so can't say for sure. It was definitely brown on the back. It was quite large though - like I said, ALMOST the size of a smaller crow, bigger in build to a magpie though (who are smaller and skinier than crows) one of those.
It didn't seem to be a Peregrine Falcon either.
Out of the two, for colour (from the back) I would go with the Sparrowhawk.
I will be keeping my eyes open, as usual, and hope to spot it again.

I see, that, through replies from yourself and others here that there seem to be people more than just I, who are interested in general Wildlife, and thats great.
I hope to someday attend one of the "Bat Walks" or similar, in local woods etc.
As someone who has always felt she is trapped inside the city (through circumstance) but who would love to break free, I must admit that daily sightings of local Flora and Fauna please me immensely. I've constantly seen and been very close to:- foxes, squirrels, stag beetles, frogs/toads, woodpeckers, ducks and geese (all of these have been in my surrounding area, whether temporary - ie flying over and stopping off - or living locally and who I share my "patch" with)

Very nice :o)

Thanks all, for your input.

Sue