Many thanks for the info.

I had it diagonsed yesterday. I didn't actually see the person diagnose it but was told it needs 2 new front shocks. I assume maybe on will be faulty and recommend fitting a pair. I could probably do with getting it checked elswhere.

Might just unplug the CATs unit in the boot and put a meter over both front shocks and see if the resistance is the same but not sure if that will tell me anything