Is this the source of the knock

[damiandvs]

Should there be any movement?
Top engine stabaliser: https://youtu.be/5jOtyC93SgA

damo

 

[youngy711]

I had a knocking noise only when the engine was cold. There was also play in the top mount like yours I changed it and that sorted it.

 

[academic]

http://renaultpartsdirect.co.uk/products/Renault-Clio-197-Engine-Mount-Stabiliser-Bar.html

I've had this knock for a year or so, finally got round to ordering a new stabliser bar and having it fitted when the car gets serviced next week