Disco 2 Deceleration vibration

Hi, my disco 2 auto has a bit of vibration after deceleration at slower speeds. Like your going over loads of lines painted in the road at some roundabouts . accelerate and it goes. Also a bit of a harsh jolt if you accelerate immediately after decelarate. I sometimes have to wait a second before slowly accelerating to not get the jolt. Not sure if its two different problems. Any ideas

Thanks

sticking calipers on warped discs maybe?

They are not that old, no lumpy feedback through brake pedal. Breaks work ok.

the feedback to the brake pedal is damped within the modulator is it's not very agressive