Are these ghetto link bushes the reason why my Clio creaks and knocks?

[BPY]

Secondly, is it dangerous driving in this state?
Drivers side:

Passenger side:

 

[GrahamS]

If you can shake the arb and it's loose on the bushes then they need changing. Only a fiver a side. Inner arb bushes are always a big improvement. knock is likely to be top mounts as they're crap

 

[Dan@SJM]

Those are absolutely shot.