People should start writing to Jim Dowd about this. Its not much fun having no power in these temperatures and even less when you can't rely on a continuous service. Jim intervened very successfully last year in our case after which we received kid glove treatment from EDF.
I suspect that as in our case the circuits are breaking down as they can't cope with the level of power required, probably exacerbated as people turn on electric heaters, etc so it may be that major works are required, as in the cases of Honor Oak Road and Westwood Park last year.

I can also recommeng Lawrence at the South London Press for a bit of help in publicising this. Only when EDF are faced with media and MP pressure will they prioritise the work.

I may have the numbers and contact details for EDF as they allocate a customer care officer after a while for persistent power cuts so I will look these out. Also its worthwhile looking out for elderly people who may be at risk because of these outtages.