No... (Score 1)

He didn't actually say anything of the sort. I'm not a fan of his by any means, but to be fair, the question posed was (something along the lines of) 'which do you prefer, imperial or metric?'. This was in the context of the interviewer Evan Davies trying to achieve his openly stated aim of giving the British public a firm image of David Cameron. The conjecture at that point in the interview was that he can sometimes seem somewhat woolly in his stated views, and it's difficult to see how he's going to appease both the right and the centrist elements of his party. He then went on to answer that question by saying that he personally prefers pounds and ounces. This has thus been put through the press grinder and now it's 'David Cameron Says Brits Should Be Taught Imperial Measures'. He doesn't, it's simply nonsense.