On a different note, and not to defend MPs as they are actually mostly undefendable, but there are only 650 of them claiming allowances, not over 100,000. Take a £ from each of them and you save £650, take a £ from each member of the Military and you save £100,000+. Even a numpty beancounter can see where the savings can be made most easily.
On the basis that the military couldn't make a bigger hash of running the country than 650 MPs, I see the potential to save 650 * £64(?),000 pounds per annum in wages alone. Add 30% for allowances and that's circa £50M/year.