Are you seriously suggesting that legislation will be passed that will wipe out this countries classic car industry overnight?
You've got to be joking, half of the people that run the country also run classics as well as the restoration industry providing jobs in their constituencies.
Absolutely no chance.
I'm not suggesting that the restoration industry would be wiped out overnight.
The restoration industry would continue as normal, Providing that the restorations are not re-shelled, or use a new body on an old chassis or
vice versa, and are restored with parts current at the time of manufacture, and are not updated in any way with modern parts, (Engines, drivetrain, axles
etc)
A 1965 Lotus Elan, restored using refurbished or NOS parts is OK
A 1965 Lotus Elan restored using one of the new chassis available, which uses a Ford Zetec engine and a five speed gearbox from the factory would
lose it's identity and therefore it's reg and be liable to SVA, see my previous posts about why it would fail.
An MG (One of the most commonly restored cars )with a BMH Heritage shell would also be in danger of being SVA'd