In message , at 17:48:10 on Sun, 6 Sep 2015,
Mizter T remarked:
The Travel Centre/Office is at the far west of the building, at approx
ground level up a flight of stairs from the booking hall. It's mainly
for selling guided tours and such like to tourists, it's not really
about the tube.

Says who? (Apart from you.)

https://tfl.gov.uk/fares-and-payments/buying-tickets/visitor-and-travel-information-centres

The prominence of the "Attractions and Tours" on that web page, plus
seeing it when it's open and the looking at the range of information on
display and the fact it had a huge and very slowly moving queue. Quite
unsuitable for asking for advice about which tube train to catch. It's
all about getting the commission on the Tussauds tickets.
--
Roland Perry