John Rumm wrote:
I remember seeing a US made video with a plumber using a pipe
de-burring and cleaning brush that was mounted on a cordless drill.

It struck me a pretty good idea considering how much time you can
spend cleaning up pipe ends prior to soldering etc - especially when
they are in difficult places.

Anyone know of a supplier here for similar brushes?

hundreds of them of fleabay:
http://snipurl.com/28qlrvk

this is probably what you are looking for though, a 13mm version:
http://snipurl.com/28qlsb4

hundreds of other results he
http://snipurl.com/28qlsjx