If all else fails, could you get a GPS speedometer app on your phone & have that in a phone holder on the dash? (obviously visible, but not obscuring your view, probably one of the vent-mounted holders ideal)
EDIT just realised I'm a week late to the party sorry, hope you managed to get your test passed OK? I remember an old mate was taking the test in his Fiesta 1.8D van conversion & on the emergency stop the brakes jammed on due to a failing flexi hose, happy he was not!
EDIT just realised I'm a week late to the party sorry, hope you managed to get your test passed OK? I remember an old mate was taking the test in his Fiesta 1.8D van conversion & on the emergency stop the brakes jammed on due to a failing flexi hose, happy he was not!