What do I do with this Horse Passport?

[marioforever]

A couple of months ago I purchased a mare from a friend. She was originally sold through Southall Market and has a Richard J.Steel (Horse Passports) Ltd passport, which she probably had to have for the market to sell her. The market no longer exists, so where do I send the Passport to get my name down as the registered owner? or can I get one through say CHAPS (she is a piebald mare, believed to be French Trotter but I do not have her breeding.
Many thanks if you can help.:

 

[Black_Horse_White]

I had one of those too, the donkey society are responsible for them now.