Catching up on the Welsh 20mph story. Not surprised it's causing a fuss.

Can't help thinking they should go for the Oxford model, or 30mph on through routes and 20mph on all other roads. It works pretty well.

The Netherlands does this too, with 30 and 50 km/h zones, which are rough equivalents. 

 @c3e4f7fd Originally I was all for it... until last Sunday when I actually had to sit through it going down a main road, down a big hill as a passenger. I now think your suggestion of the Oxford model would be a better approach.

Councils can choose to make some roads 30mph but in our case they haven't.