Just for closure. I had the Aero saloon springs fitted yesterday and had a full laser alignment done aswell (FOC!). The drop on the car is about 30mm, and the car now looks and handles like what it always should have done.
I have covered about 100miles (mix of back country roads and motorway) and the handling is greatly improved - less body roll / flater cornering, and this is the strange bit - a more comfortable ride (even going over speed bumps)!!.
I know that i
may have issues with a fully laden car (bottoming out etc), but i'll cross that bridge when i come to it (or no passengers above the age of 10 rule).
So for now i'm very happy and if my wheels fall off or springs pop out i'll let you all know

.
Oh and the cost inc. fitting was £125!!