AU2 Knocking in front end

[b2tf]

I know this should probably be in the tech areas but im more in need of info from AU owners, hence I posted it here.

Dad's AU2 has a very odd knocking/creaking kind of noise coming from the front passenger side at low speed. It seems to happen when steering and also when going over rough surfaces, so Im thinking either shock absorber or possibly the charcoal canister? (I think thats what they're called?) rubbing against the panel.

If it is this, whats the best way to get in there and check? It is a case of removing the wheel well splash shields and getting in there?