While I was doing my Direct Access to get my license (lessons and test on 500cc), learner riders are restricted to 125cc.
I had a Honda CG125 to get back into getting some road sense (seem to have lost it after passing my test!).
The thing was more like a thong than a bike ...
Ride round all day on a 'fast' 500, then go home on the CG with the throtle wound round to the stop!!!

I'm amazed you guys can get a bike on a car license and THEN consider going for lessons!!
Probably not as easy as that ... is it??