On 2010\10\20 16:49, Graham Harrison wrote:

"Offramp" wrote in message
...
Gah! I just remembered Warren Street and Goodge Street.
I was *thinking* of Baker Street and Bond Street!
Back to the attic!

How about

Which is the only London Underground line which boasts two towns along
its' route where each town has precisely two stations? I believe the
answer is the Piccadilly with Ruislip/Ruislip Manor and Sudbury
Hill/Sudbury Town. The question may need tweaking to make it clearer. I
used the word "precisely" to eliminate the 3 Hounslows but I'm not sure
about use of "town".

There are several such station pairs on the District, namely Ealing,
Putney, Wimbledon, Dagenham, Upminster, Bow and conceivably Ham. Your
question doesn't specify that the line should have only a pair of pairs.