I apologize it's been a few years since I graduated.
I don't disagree with you on the problem being excessive government spending. I do disagree with how you adjust that expenditure whilst keeping the economy going. I honestly think that cutting now, will push us back into a recession.
In reality the size of the civil service hasn't "exploded" as the conservatives would have you believe. It's actually been the stable. There's about the same number at the start of the Labour victories till now
The civil service is only a small part of the public sector though.
http://www.telegraph.co.uk/news/uknews/1515144/Public-sector-jobs-at-record-6m-under-Labour.html
It is the public sector as a whole that has grown massively under labour, but the contribution of the public sector to the country's wealth has not, suggesting that the fiscal multiplier on this spending is very low.