Yeh it is mate but I've heard even the sports cat can fail an mot, make sure you get a 400cell or more
 
I have a blueflame 100 cell cat on mine and it has passed every MOT for the past 7 years. I always get them to do the emission test first while the car is hot after a hard drive.
 
Ill wait till the end mate because I can get one supplied and fitted for £120 from pipe dynamics
 
Take it off and sell it to me for £50 then lol I'll see what it goes for at the end mate