The Australian's spend about 1.8% of GDP. Our issue is current projects planned will bust the budget for a few years to come, so we have to cut just to get back to the start line.UK budget deficit as a % of GDP does not tell the story properly nor does the fact that we have the highest headline debt figure ever you should perhaps take a look at these charts:-
United Kingdom National Debt Charts
Puts it all into a proper perspective for me, you could argue that the historical record shows that things are not as bad as is being made out. While in cash terms defence spending is increasing it is/has been contracting as a % of GDP, it is bobbing along at just over 2.5%. It is also a fact that defence spending as a proportion of government spending is now less than 9% and any savings in defence will be minimal in the scheme of things. The key statistic seems to be %GDP on debt repayment Labour don’t seem to have got it as high as they have in the past.
I do however want to see good use of our resources but I would also like to see defence funding at between 2.75% and 3% of GDP which is in my opinion a reasonable amount (and get the value for money the Australians appear to be getting). I would also point out that the impact of large scale cuts on defence will be bad in the manufacturing sector that government wants to boost.
I suspect eventually we will get to a little over 2% excluding the funding for Afghanistan. The debt figures are high when you take out the impact of WW2. Remember the Tories are not repaying debt, just cutting the level of increase (PSBR).