Sorry trying to type quickly as my son was out of bed again and shouldnt have been!
No i dont know the horse now but might well have known it a while ago. i am iin the Nottingham area if that is of any help, might ( if i dig in the depths of my brain) be able to tell you the name of the girl i think used to own it.
Guessing it could be a popular name for a horse so might not be the same one ( although age breed and colur sounds right!)
I just realise how odd that must seem, a gelding called Kerry, but anyway I'm pretty sure his passport had him down as foaled 1988 so he is probably 19 now. Beautiful white star on his forehead but was quite a grump with people he didn't know. He was a great jumper but spent some of his time as a jousting horse with dreadful fat actors on his back so not a surprise he was sometimes a grump!
I know it's not yours as I knew a little mare 15.3ish rustynut mare think she had a blaze too. Not sure on leg markings. Was a hunter we had in 2000 up in Northumberland. She will be in her teens now. Just off to find a pic of her. Think the only one I have is of her very soggy on the beach after being knocked over my another horse. Interesting to see if she is the same as yours Christmas_Derby??