UK courts operate a hgg hmm 'hybrid' system whereby they will attempt to NOT use common law at every opportunity and will switch to the revenue generation method of statutes and acts whenever possible. Only those who realise this and use the correct language will get the courts to honor common law and those do not typically include lawyers.

Switching the courts to the older jurisdiction is done though and you can see videos of it on youtube (filmed 'illegally' according to the courts). As I recall, the language is 'traveling in a conveyance' rather than 'driving a motor vehicle/car'. ;)