http://www.edexcel.org.uk/VirtualContent/72455.pdf
S1 is what I'll be doing (well, different questions of course)
if I can find C1 somewhere, that's my stuff too
and here's the C1 stuff:
http://www.edexcel.org.uk/VirtualContent/83444/GCE_Pure_Maths_C1_C4_Specimen_Paper_MkScheme.pdf