There are two arguments here as I see it.
If you make gaining a licence harder/more expensive in the UK either more people will consider it of greater value and be more careful not to lose it or more people will consider it worthwhile not bothering with a licence at all.
Making licences more valuable may also increase the willingness of some to look to crime to provide the necessary document.
Whilst driving in Finland may be more demanding due to climatic conditions, driving in the UK has its own (peculiar?) challenges. So perhaps a tougher regime of practical teaching would be of value; theory is necessary but experience is more important in my opinion.