Kalif, I not so sure you're fully up to date. It's difficult to work out what the regulations actually are, right now; too many exemptions and amendments to what we all "knew and loved" for decades.
But it has also been discussed recently in this thread:
http://www.pprune.org/rotorheads/569...ngement-2.html
From here:
Rules of The Air 2015 (March 2015)
This is what I found in section 3:
Landing and taking off within congested areas and near open-air assemblies
5.—(1) An aircraft must not take off or land within a congested area of any city, town or
settlement except—
(a) at an aerodrome in accordance with procedures notified by the CAA; or
(b) at a landing site which is not an aerodrome in accordance with the permission of the
CAA.