Paul Weaver wrote to uk.transport.london on Sun, 14 Nov 2004:

Kenny O doesn't have A LUL office, not sure if the natioanl rail office
sell tickets either.

They do. Or they did last time I used it regularly which was,
admittedly, some years ago, but I can't see why that would change.

At West Brompton it's the other way round - there's no dedicated ticket
office for the National Rail lines, but you can buy tickets at the LU
office.
--
"Mrs Redboots"
http://www.amsmyth.demon.co.uk/
Website updated 6 November 2004 with new photos