"Ed Sirett" wrote in message
news

Since so many people said that it was a common practice I've been
looking.
Hard. I haven't seen anything like it hereabouts or on any of my
journeys.

Perhaps it's a southern thing ...

If I had a few more roun tuits I'd get the camera out. At least a dozen or
so buildings with gas installation (as well as service) pipes on the
outside with in 50meters of here.

You're not in Leeds. I can't believe that Leeds is unique.

Mary