Ok my MOT runs out on 2nd March which is next monday. Car is to go in for MOT on the monday (which it better bloody pass).

My tax runs out Saturday. So I want to go get tax on friday, using the old MOT. Its a while since I've done it, but I'm sure last time I tried this they wouldnt let me.

As far as I'm aware, all I need is a valid MOT (which I have), so can they legally refuse me road tax?