Lois PM me if you need team members, I've always fancied it. I've got an "Open" level horse.(Don't fancy long distance travel though, 2 hours would be my limit). I'm not far from you.
I used to team chase and it was the best fun i;ve ever had, very addictive!! I spoke to the organiser of a local event to me and they gave me the number of a team that were looking for a fourth person ansd went from there, ended up going all over country! Fantastic fun!