The case of the Wonderbra wall safe

According to the lingerie industry, which has years of expertise in such things, between 80 and 85 per cent of women wear the wrong size of bra, writes Peter Rhodes.

This tells us that most women do not know their own body size.

Yet Sherlock Holmes (BBC1) a fey, sexually unsure creation, can take one look at the naked body of a woman (which, let's be frank, is hardly his specialist subject) and conclude that she is exactly 36-24-36 and this is therefore the combination to her wall safe.

Preposterous, my dear Watson.

Great fun, though.