Quite leafy Ruislip, a typical London suburb, was home to Helen and Peter. He was a 2nd hand book dealer and....... well, what else? And why did Helen end up commemorated on a stamp?

I'm not going to tell you now, you'll have to listen to find out. Can you work it out before Alex does?

Hillingdon has jumped the queue, Havering will be next week. Plus random cat news, and dappled shade in the street.

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