Thanks for the advice eventerbabe - I can't think if she does have pink muzzle, there may be some pink in it but not as bright pink as some horses I have seen. I have got her a fly mask which goes right down to the end of her nose, so hopefully this will offer some protection against the sun as well. Can you use human sun screen on horses or do you have to get proper horsey stuff?
Joyfull - I would love to have the dates of the horse shows in Peterborough if you have got them handy. As I said i have family pretty near there so it will be easy for me to get to - I might even drag them along as well. Thanks for all your help - is much appreciated.