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Different police forces operate in different areas. The place I was in is operated by Thames Valley Police, the area I live is operated by Essex Police, then there is London Metropolitan Police for London area etc. They all have different operations for dealing with speeders, including costs of the courses available (range from £60 - £95 depending on area course is taken). Obviously the cost of a fine for the area it is committed goes to that police force (I assume), therefore they wouldn't want the money to go to a different force. I don't know this for sure, just presuming. I've checked where I can do the course under the 'Thames Valley' areas and it includes closest one to me which is Ealing (West London), which is 1&half travel. Better than going back to Bucks I s'pose... gonna booked that one.
Beattie819; there is a course available in Wales but only North Wales Gogledd Cymru. It's showing up on the courses available (just checked), but again it might not be applicable because of the area 'offence' was done.
Thanks to everyone for your advice/comments... appreciated.