Thanks again for your helpful comments.
If I decide to do my license I will probably aim for 2 hours a week, that is the maximum I would be able to do (maybe 3 if I am allowed to fly for 3 hours straight). That should be pretty intensive course, isn't is?
Thanks for link to cranfield airport, really appreciate it. Anyone knows any other places/aeroclubs in the proximity of 50 miles from central London?