Hmmmm! Thanks Scott.
As I understand it, the new MOT rules will require the presence of a cat in the car (perhaps in the boot) at the time of the MOT, if one was an OEM fitment as standard. That is not a problem. What worries me is the roadside check scenario, whereby the absence of a cat in the exhaust system might lead to a fefty fine and six points. I am not at present able to find anything about the new fine etc on any official website, so don't want to scaremonger until the position is clearer.

:SUBARMAN:
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Toyobaru 86 with Cosworth exhaust brakes and supercharger, Cosworth mapping, Eibach lowering springs, OZ alloys, fast road geo and various cosmetics. Great fun!