In uk.transport.london message MIOdnaaWOsLD3vXLnZ2dnUU78dOdnZ2d@giganew
s.com, Wed, 9 Dec 2015 09:06:06, posted:

This urban setting outside the M25 still has evening box collections with
more than 4 within 5 minutes walk of our house.

If you still live in the same place, your 5-minute-area surely has one
of the highest concentrations of letter-writers in the UK. It may be
that so many are provided there not for the convenience of perambulating
posters as such but to save the poor post-collectors having to extract
envelopefuls from boxes crammed to bursting-point with erudite epistles.

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