During basic training at Ashford in the early 70s, when the news was packed nearly every day with stories of the human and financial costs of the terrorist bombing campaign:
Cpl (after less-than-satisfactory block inspection): "If the IRA planted a bomb in here it'd do £10,000 pounds worth of improvements!"
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Generic one I only ever heard once - used when anyone was heard to mutter "schidt":
"..said-the-King,-and-five-thousand-&rses-heaved-and-strained-'cos-in-those-days-it-was-no-mean-thing-to-disregard-the-word-of-royalty" (reeled out in one long without-pauses spiel)