I'd definitely recommend Bradbourne - Sara Howe is very friendly and down-to-earth, but a very successful driving competitor too, having just won the Pony Fours at the National Championships, whilst her daughter won the Open Pony class!
Thanks for sharing this information. I was also looking for one for my brother. I took mine when I was in dublin and it was really fun. I have also learned about drving rules which are different among each country.