What Astra do you have buddy? And also what badges are you trying to remove? depends on model and what badge really. The griffen on the rear of an astra G for example has 2 holes in the boot lid for it to fit. Where as the H has the griffen just stuck on along with all the other badges on the Astra H. (Y)
i removed all my badges. i heated them up with a heat gun jst enough to soften the glue. then used i cataloy card covered by a cloth so not to scratch the paint. u will be left with glue on ur paint. i used auto glym intensive tar remover to take that of. once that is off u can still see the shape of the badge bt jst use some t-cut over it on then ur sorted.