Do the top mount bushes actually affect suspension geometry though? When i was at the garage and they were checking the allignment that said that it was the beam that located the wheels and the dampers wouldn't affect the suspenion. At the time I did disagree, but thinking logically and visualising things, it makes sense.
Think so on the front - if the top of the suspension strut isn't properly located on the inner wing mounting points, it could throw out the location of the top of the hub carrier - and if the hub carrier isn't properly aligned it will definitely throw out the camber.
I'd need to take the struts off to give you a more definite answer - which I might do in the spring, to check for corrosion & get a bit of rustproofing in there if I don't like what I find.