It's thousands of years old, and at one time served the people of Peckham (the "Pecks") and the people of Dulwich (the "Dulls") with their drinking water, when taxis refused to bring Evian south of the river... or something. Anyway, it's been rediscovered, in a 64-year-old woman's back garden. According to the Telegraph:

Some history books have claimed that "camber"' meant crooked and that water from the Camber Well could cure "crippled or crooked people. Another theory is that the well was named after Prince Camber, son of Brutus of Troy who according to legend was the founder of London.

I prefer the first explanation, and suggest bottling the stuff and making it available in the House of Commons restaurant immediately.

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