My car suddenly feels like it is steering from the rear!

Does anyone have any ideas where to look; wheels and all front suspension appear tight. I am currently running loads of negative camber on the front, could this be the cause?

Tyre pressure(s) low at the rear?

Suspension coming undone at the rear?

I'll check pressures and rear suspension tomorrow, thanks for the thoughts

check the chassis brackets for the trailing arms and the arms at the bushes.

play in the wheel bearings ?

Thanks for the ideas, I'll check them out tomorrow and update the post

Check your bushes. My car was doing that then the lower joint ended up being on the floor...Not safe!

Thanks for the advice everone. It was excess play in n/s/f wheel bearing, following my suspension upright change. I obviously hadn't seated the inner race on the shaft properly. (Easy and cheap fix)