To say the rot set in when we left the gold standard is incorrect, churchill took us back into the gold standard (after Chamberlain took us out of it I think) at a time of recession and high unemployment Churchill's policy resulted in Britain owning something like two thirds of the world's gold.
The euro isn't a flakey currency, it was very stable until the banking crisis, now the problem is that Wall Street (Obama included) is trying to destabilise the euro to mantain the dollar's primacy, the run on Greek bonds is coming from wall Street Alan Greenspan, George Soros etal.
The pensions crisis wasn't started by Brown either, check out Robert Maxwell and L.D.V for fund dipping, check out Royal Mail (and many others) for payment holidays, the shareholders stole your pension money and now they want you to pay it back.