Hi guys

Just recently ive noticed the steering on my Fiesta being a bit vague and very much lighter than it used to be, also, you can be going in a straight line with no change to the steering, all of a sudden the car will head off left/right, still with no change to the steering

This is accompanied by what can only be described as a knock coming from where the drivers side front wheel is, this is heard when going over bumps and when the steering is all the way over to the right and moving slowly, it doesnt sound like a driveshaft as ive had one go already and know what it sounds like

Any ideas?

Thanks in advance
Ben