"What about ops in controlled airspace for instance?"
ShotOne, the irony is that the CAA actually prefer the thought of RPAS ops in controlled airspace. Why? Everyone else is flying under a flight plan and will have standard comms and a working Xpdr or they're kicked out - therefore deconfliction is somewhat easier. The problem vis-a-vis other airspace users is the sense to avoid (S2A) issue of how to prevent RPAS colliding with civvies flying around open FIR looking at their IPad moving map rather than out of the window......