applying to UK unis - GPA meaning & confusion

When unis say about the GPA, do they mean the cumulative from g9-g11? or just the most recent one?
Because my GPA in G11 is 3.72 but then my g9-g10 is 2.5!

they mean cumulative, but they typically want a very low (by US standards) average- what is your 9-11 average? what unis are you looking at?