My mot tester has rollers designed to deal with lad's. I don't know but I imagine most modern ones can now.
It was rollers.Re the MOT. Did you go for the brakes on rollers testing or did you ask for a Tapley meter?
Asking as I have read contradicting info on here and mine needs an MOT.
Also, what is your exhaust? Is it straight through/x-pipe with single cat.