[Graham]

Hi Graham,
Can you put me down for class B & C please. Just to clarify, slot it group c cars aren't eligible to enter in any class for this event right?

You are correct, Group C cars are only eligible in Class A, and this "Modified Class" is for the Standard Scalextric, SCX, Carrera, Ninco, Fly bodied cars with standard or modified chassis, motors etc.
I have added your car entries to the list above