Peter Masson ) gurgled happily, sounding much
like they were saying :

I can't see how Chiltern can possibly compete for London to Oxford
traffic. FGW can get there in 52 minutes, and if it had to compete on
speed could do the journey non-stop in no more than 45 minutes.
Chiltern's best time, non-stop, to Bicester is 50 minutes. It seems to
me that Chiltern, like the Metropolitan before them, have got
mesmerised with Oxford as a destination.

Look at the popularity of the Oxford Tube coaches - no WAY are they getting
to central london in 50 mins at rush hour...

"Approx travel time 100mins, longer in rush hour". But - they're cheap.
£11/£13 return.