I can't see the bird very clearly but with that sort of colour I think it can only be a male Bullfinch.
Did it look like this?
Nice bird to get in the garden
Was just looking for a photo of a Great Spotted Woodpecker to see if they have that much red on them.
Thank you for your suggestions, I was trying to take a picture when it flew off and only just caught it. It was scarlet red and only saw the black wings when it flew off. The only bird I can find which would look similar is the scarlet Tanager which I believe are not found in the UK.
Yes, it could be Alan. GSW's do have quite a lot of red in the vent area. I couldn't sort out which way up the bird is from the photo
What size was it Fiona?
Another possibility is it's an escapee from a collection.
I've just googled Great Spotted Woodpeckers in flight and I think you would have seen more white than red.
I would have thought the bird was the size of a woodpecker but I have never seen one with this colouring. Whilst sitting in the tree all I saw was red. In the photo the bird is flying off to the right. It has a light coloured beak, black wings and a black tail. The head and body are all scarlet red. Wasn't sure if it could have escaped from somewhere and not natural to this area. Only a thought.
Could be an escape or one blown off course by strong winds, as has happened to Scarlet Tanagers before, but rarely! Have just read on google!
Similarly poor picture of Bullfinch (my best :( )
GSW - nowhere near enough red. (I think this is a female, male would have another red patch, but only a patch, on back of head.