I actually did 11 but I think of it as 10 (our school makes you do Single Science in Yr10 and Double in Yr11, so we effectively do the same exams twice).
Yeah same, at my school you could only do 9, and an optional GNVQ in ICT (which was the equivalent to 2 GCSEs)....but due to the "GNVQ" part, people thought it was far less credible!