Hi..im afraid to tell you the bad news if you want to enjoy your car,you will have to replace all.3 of them...
They all are causing massive vibrations and I'm surprised you survived the drive..
If they all are the black series then the vibrations won't settle down...
You could get the yellow series of powerflex bushes instead but just for the lower engine(dog bone) and torque arm bush as they will improve your drive comfort and you will will be able to keep your own teeth
Just read your reply again
So if I was to buy two powerflex yellow bushes, one for the lower engine mount and one for the upper torque arm bush, then do I just buy a standard Renault bush for the upper engine mount?
I've had a look here, and I can't see the upper torque arm bush?
https://www.powerflex.co.uk/road-series/products/Clio+III+(2005+-+2012)-2882/1.html
Also, are the ones listed here, the right ones, I mean, they look yellow in the photo? lol
How much do you think a garage would charge to change all three for me?
Thanks so much for the help!