Thanks mate! So are transponders used across the board now, or just in some regions?
The reason for the question(s) is that I'm toying with the idea of taking in a local race when I'm next in the UK. Not sure when that will be, possibly this year if not next but only if it's going to be easy to do. It's always a bloody expensive trip from Japan, so I'd prefer not to add the cost of a transponder to the budget!
