I think my rear shocks have played their part and now need replacing. The suspension is a bit squeaky over speed bumps and there's been a couple incidents where I've experienced some pretty bad oversteer and I've been left snaking out of a bend.
I don't know if this is meant to happen but I've never experienced oversteer like my vectra has in a FWD car.

So I will be getting it checked after christmas and I was considering getting coilovers if the shocks do need replacing. I don't mind spending up to £500 for coilovers and have been considering them ever since I got the car and would only look to drop the car 30mm. I noticed the budget FK coilovers for the vectra are £180. Anyone got these coilovers and can tell me if they're any good?