steering wheel shaking when brake at 60 mph

hi , I got an TD5, when steering to right and I can hear knocking noise coming from the front offside just under the driver seat, but I have check underneath and couldn't find any part losing. however, in the past few days, when I brake at aroung 60 mph, the steering wheel shaking seriousy, Does anybody come across with this and can give me some advise. Tks

cv joint failing?

Tks, mates. will that be difficult to replace the CV joint???

i had similar when me cv failed but the brakes also pulled to the side that had failed.