The Metric Martyr... I dont have my notes to hand, but... from memory (it was only a fortnight ago!!!);
Thorburn wanted to continue selling in imperial units. There had been an EC directive that would impliedly repeal the "weights and measures act 198?". Consequently, Throburn (or his legal team) came up with the rather unorthodox and cunning plan - they would try to say that the Weights and Measures Act impliedly repealed the EC Act 1972... the priniciple being that when new legislation is enacted and it "covers" an existing situation, the new legislation overrides that pre-existing law. Throburn tried to say that becuase the Weights and measures Act (which allowed imperial units) came after the EC Act - it (W&M) had effectively repealed the EC Act - or at the very least the legislation enacted under it's umbrella that affected "weights and measures"...
I think that's it in priciple.