"Paul Terry" wrote:

If you mean a route that includes going out to, say, an industrial
estate, and then returns via the same road(s) then yes, that is indeed
common - a lot of the buses in the Heathrow area (most notably the 805)
do that, but there are plenty of other examples.

One of those examples being at Beckton, where TfL routes 366 and 262
'lollipop' to serve a Sainsbury's supermarket.

Chris