I had posted earlier that I was looking for a garage to take my Mini too, since it is now out of warranty for oil changes. I found a garage in Tampa (where I live) where the owner/mechanic is English and he was fast and reasonable. (Around $48 for oil change.)

The place is called Charlie's British Cars. Charlie was very nice. He's been in business for almost 20 years. Here's his website with the particulars:
http://www.charliesbritishcars.com/

He asked how I found out about him and I told him that I saw his ad in the yellow pages where it mentioned Mini Coopers. He told me that he is beginning to get more Coopers in for oil changes now since many people are past their warranty.

 

Best garage, is your own!

 

I'm sure you're right about your garage but I'm afraid that wouldn't
hold for mine!