Walter Briscoe wrote

Sadly, it is not. TfL places stop codes at its stops. At most stops
they
are on the bottom of the bus stop flag, showing the stop name. They
are
also placed at the bottom left corner of stop timetables.
You can use
http://www.tfl.gov.uk/corporate/proj...hemes/11560.as
px to link to the "List of stop locations" at
http://www.tfl.gov.uk/as
sets/downloads/corporate/Agreed-stop-locations.pdf where you can
find

Stop Code Stop Name Borough
...
15979 Hayes And Harlington Station London Borough of Hillingdon

I could not see that stop code (15979) at http://www.nextbuses.mobi/.

No, thus when the the text message interface starts up the users will
no doubt have to use a prefix, texting say Lon15979 since the Tfl codes
are not unique, country wide as the Nextbuses ones have to be.

The TFl site seems to have a dozen or more pages for every bus stop,
not just the "new iBus display" ones in the above PDF, and each one
gives the relevant Tfl stop code.

I Googled [ Hayes Harlington "stop code" site:tfl.gov.uk] and got
several, so TfL does in fact publish bus stop names and numbers and you
can feed the names back into Nextbuses.

Try [ "The Dysart" "stop code" site:tfl.gov.uk]

--
Mike D