unsuccessful pgde application due to maths grade GlasgowWatch this thread
You can take the retake exam, but most institutions would want to know your grade sooner than a few weeks before the course starts.
In England you can be accepted on to the PGCE with a C in Maths.
I live in Dumfries (Scottish borders) and applied toScottish universities and University of Cumbria in Carlisle. I was having to do a National 5 maths course as I only have a 3 at S Grade Maths. I have since been accepted to the University of Cumbria though as my 3 is acceptable there. Now I don't have to do the Nat 5 anymore.
It may seem unfair that there is a difference BUT Scotland is happy to accept people without honours degrees, however England aren't really. Swings and roundabouts.