[N00b]

The story so far. my 2006 ZTT failed its MOT on a few issues, a corroded/leaking offside rear brake pipe. The MOT work is all complete now except for the fact that my mechanic cannot get any fluid through the new pipe he fitted.
After speaking to him yesterday I now know the following.

The pedal depresses fully to the floor.
The fluid level in the reservoir doesn't drop, nor does it leak any fluid.
He thinks one of the master cylinder seals may have been pushed inside out but after doing some reading in here the T4 system seems to get mentioned often, so my questions are:-

A) do the informed minds in here have an opinion on what can be done?
B) Is it likely that I need a new master cylinder and
C) can this job be done without access to a T4 system?

It's the only thing that's stopping me from getting the car back on the road and to say it's frustrating the life out of me doesn't even come close. If I haven't given enough info on the problem please ask.
All help NEEDED welcome.
Thanks in advance.