Even in this conjested island there has to be multiude of areas that could be set aside to allow certain avaition training procedures to be carried out to completion, or as near as the PIC decides is safe, without the fear of recrimination from the CAA.
If the military can have vast expanses of the country to practice blowing each other up, perhaps some of these areas could be utilised for specific training at weekends/bank holidays. For example, a relatively small area at the edge of a danger area (Salisbury Plain, Otterburn etc) could be utilised for PFL's, EFATO's late go-arounds et al, without the obvious worry of pi55ing off the local populace, because there wont be any. I appreciate that many of the DA's are active weekends, and some are activated by NOTAM, but with the right procedure in place, and an appropriate controlling authority, these could be very well utilised to give us all the oppertunity to carry out the procedures to everything but the landing.
I would imagine that these areas would be heavily utilised, but the skies would ultimately be full of people that have the confidence, and now the experience of dealing with these situations in an emergency.