Took her an MOT and service.
I told them before hand that the horn wasn't working since I had replaced the MFA stalk.
They fixed that and then it failed because of the brake balance on the front was fubared.
Turns out there was a massive air lock in the new hoses, so they bled them and re-filled the system.
Then passed with an advisory on the rear passenger door handle. Apparently that would have been a fail, but was changed last year.
No idea where I will get a replacement though...
Change from £300, so could have been worse.