HELP! A4 b7 2.0 knocking front end

[Jchid000]

Hi everyone just looking for some guidance as to the knocking coming from the front end of my car. I was on a long drive and this knocking noise started which at first felt like a tyre that was low but I soon pulled over on hard shoulder and the vibration got even worse, I turned the car off and on again and it kept doing it really bad juddering whilst stationary and moving. It seemed to stop above 2k rpm roughly. I went to move the car and went around a sharp roundabout and it completely stopped! All I get now if I accelerate quickly in 1st and 2nd gear I hear a small knocking noise in high rpm?

 

Can anyone suggest what this could be??

Thanks