I've looked into this in a lot of detail now, and there is a hell of a lot of truth to what the locals are saying, the evidence is all there in various EA reports.
IMO the Environment Agency should be in court over this, they've deliberately allowed much of the levels to become at far greater risk of extreme flooding for ideological reasons / false financial arguments / a complete misunderstanding of hydrological processes. It's also bollocks to say this is due to lack of money, the EA employ a vast army of people on extremely good salaries, mostly to sit around in offices writing reports while front line staff and actual flood prevention budgets are relentlessly cut. The EA get's about 4-5 time the funding of equivalent agencies in most of Europe, it just pisses most of it up the wall.
Will post more when I've got more time.