the law used to allow provisional licenses for bikes at 16 but cars was 17.
i am out of touch,but i believe that cars is now 18 but im not sure if the law for bikes has also changed as it all relates to the 2 part license nowadays
You can apply for a provisional license at 16 and can ride a <50cc bike/scooter with only this liscense and the rider training.
You can get a car pv at 17, except special circumstances (mobility problems)