Had the same problem - I just disconnected the bottom of the steering column in footwell to allow retraction of the master cylinder. In the Haynes manual, the column is not visible! Just make sure you a) tighten up again after, and b) check it every few days just in case. Also, if refitting the clutch pedal, beware snagging the clutch switch (grey spring-loaded pin) - I just snapped mine off.
ianboz, July 2008