UK, Ireland / Obtaining driving License in UK or Poland ..which is easier [8]

After more than 40 hours driving lesson I took the Polish computer driving test which I pasted at first attempt..
Wrote the practical 3 times and had a negetive result...My last trial was he best ever...but the problem was that I forgot to but down my hand break and the Examination was rendered over..

My question now is...I will be moving to Uk in 2 weeks time actually immigrating..Is obtaining a driving license very difficult in Uk too..Dont get me wrong driving the car outside examination condition during my driving lesson were ok.but examination situation once is tends to be stressed up and get stuffs mix-up...

I am going to continue in the Uk...
My second question is ...........is it possible to take a written document from a polish driving school to any school \driving licence board stating that i have driving for more than 40 hours

and that i only require the computer examination there in Uk and few driving hours....
Can some one clear the air on this issue ....I am sort of puzzled.