Corsa 1.4 SXi
11.6 seconds
73bhp
Vdub Golf GTi Mk1's also came with 1.8, mk2s are 1.8 in two flavours.
~ 8.6 seconds
8v - 112bhp / 16v - 150bhp
Saxo VTR Early shape (97) Later shape (99+)
9.9 seconds for early 90bhp model
9.1 seconds for later 100bhp model
Renault Clio 1.6 (You must mean 2000+ Models. There isnt a 1.6 before then.
9.3 seconds
110bhp
If you see a Phase 1 or 2 Clio trying to race. Don't bother
If its a 16v or a Williams, you'll get eaten. Same goes for a 16 Golf too, they're seriously quick.
So in short, they'd whoop you with the exception of the Corsa. An SRi would prob beat you, I think they're 100bhp.
0-60 on your Si is booked at 10.5 seconds, but maybe you could launch it and get 10seconds or a few tenths under maybe.
Congrats on passing your test all the same, i suggest you don't go out racing everyone out as you'll just crash. Dont think it wont happen to me, it will especially in the wet. Give it 6months and then start increasing the pace
Oh and get your arse to the Sixfields meet in 3 weeks 
Mk1 Golf would cream a Si 