HI,
This looks like a big job, and there are free apps on the Google Play Store
Driving School Sim - 2020
Car Driving School Simulator
etc
(not sure how many are UK Highway Code signs and rules)
A full 3d world (roads, traffic, etc), mirrors, accelerator, steering wheel,
(clutch and gearstick or shift), could be years of work.
And there are several free apps for UK Driving Theory and Testing.
Regards, ah