Daz, your right about changing the pollen filter, but Huddy's got an astra and its not under the scuttle plate on them. You have to remove the glove box by undoing the six screws with a T25 torque bit. Then behind it in the right hand corner you will see a long rectangular cover held on with another couple of screws. Its behind that! you take the cover off and slide it in behind the center console. still quite easy to do, and while youve got ot out spray some more of that anti-bacterial stuff in there.