'We are a proud, fierce nation of bunnies'?

I've seen this remarkable series a long time ago. I have a vague memory of a phrase i heard on this series. I'd like to know the exact wording, as well as its origin (i believe it was supposed to have come from some children's book). The phrase was uttered by PM Urquhard to his mistress in his bedroom. It was meant to be a parody of a sentence he himself had said on a television interview earlier that evening. It went something like this: "We are a proud, fierce nation of bunnies".