From my experience, you are better off taking an unusual car to somewhere that normally does mainstream cars. An unusual car is usually the highlight of their day & if you have to show them how to open the bonnet & release the handbrake you are halfway to a pass before you have started.
I find turning up at the local halfords Mot Centre with a packet of chocolate biscuits almost guarantees a pass as long as it all looks alright underneath & its not billowing black smoke.
