If you read my reply you would of course note that I do use sat nav for business to avoid being late for meetings etc. However I reiterate my point that it is in fact impossible to get actually lost in the UK due to the proximity our coastline to any point in the interior.
For professional use maps are still very useful in fact essential, unfortunately many of our staff can't use them anymore which I do find quite depressing.
For fun I'll stick to what little memory I have left and enjoyment of the unknown road.