Indeed they do! However, budget cuts due to the large influx of ‘Asians’ has mandated severe cuts in the military one of the casualties is planes for carriers, another is ammo for crew served weapons ...
If you look at the figures, the large budget cuts introduced by Cameron and Osborne, which affected most government spending departments, not just Defence, had little to do with immigration. In fact the net fiscal cost of immigration (benefits etc balanced against taxes etc paid by working immigrants) is relatively marginal. The reason the welfare budget has proved so difficult to keep down is greater life expectancy and an ageing population, since welfare spending is domninated by benefits to the elderly (the state pension alone accounts for 47%).