There is only maths and English in the Sutton mock, as Sutton grammars don't do NVR/VR for 11+ (at least the boys' ones, not sure about the girrls).
I don't remember the duration of the papers, but I you look at the start and end time plus 15 minutes break in-between, that should give you an idea. I have a vague recollection of 75 questions in the English paper.
Also, there was a post from a parent involved in running Sutton mocks, maybe you could post your question in reply? It was here:viewtopic.php?f=30&t=46942&p=572497#p572497