Very few(because no one buys e'm) are road legal period because of the noise Akra's are no different the only way your ever going to get involved with emissions is if the bike is smoking badly.

As for a cat in them or any other Akra that's a new one on me!!!,I run e'm on my XT and on another bike having a cat on an Akra is not their style,and with some logical thought defeats the object of buying one in the first place,so yea Knickers in a twist is correct!!!.

The trick with the MOT in the UK is a simple one get to know the folk who MOT the bike,turn up as a total stranger YOU could be the man from the Ministry and will treated accordingly!!!