Cogito
Whether the financial crisis caused the recession or not, it cannot be denied that public spending was in excess of public income - because there was a deficit.
True, but this not particularly a Labour vice. Most governments throughout history have run a deficit. In fact, New Labour was the only government in recent history to run a surplus at some point:
www.guardian.co.uk/news/datablog/2010/oct/18/deficit-debt-government-borrowing-data#zoomed-picture
If that level of spending was already too expensive in a boom, it then became untenable in a crash.
Perhaps, but you don't run a budget based on the possibility of a financial crisis. It is the financial crisis itself which is responsible for the huge deficit. To wit, even if Labour had a perfectly balanced budget, the crisis would have put the UK in deficit at 8 or 9% - still making interest payments unaffordable.
The wisdom of running an economy so dependent on the success of one sector, we can question.
This is true. Seeing at the Conservatives receive almost half their funding from The City, I very much doubt they would have acted differently. Are you saying the Tories would have regulated the city better (more stringently) than New Labour? Seriously?
We can also question the wisdom of a government running an economy in which such a large number of people were/are reliant on the public sector for employment and the public purse for benefits.
There aren't (weren't before the crash) that many people on benefits, nor is the price of benefit fraud particularly high - it's estimated to be around £900 million annually. The cost of the taxpayer funded bailout will amount to (Bank of England estimate) £1.2 Trillion: 1,200 times that amount.
And we can definitely question the judgement of a government that was happy to fuel an economic boom through personal debt and the import of cheap labour.
This is a crisis of Neo Liberalism, not New Labour. As has been widely reported, median wages in real-terms have stagnated for the past three decades due to globalisation and attack on worker and union rights. In order to keep the economy going, and keep up consumer spending, Capital had the great idea that they'd just push credit on people so that people could keep spending money, keep up consumer demand, and keep the economy going. When the whole house of cards fell down, so did the economy.
Now we're in a situation where the cost of living exceeds wages by about three or more decades and most households are already in excess of £10000 in debt.
This has been going on for decades and occurring all over liberal Western Capitalist democracies. That's partially why this crisis is global, not national, in nature. The UK has been hardest hit because its over-reliance on the financial sector and now because of its anti-Keynesian drastic public sector spending cuts which are smothering the economy.
The truth is a lot more nuanced than 'New Labour is to blame', and the crisis has almost nothing to do with 'profligate' public sector spending.