Alright i've been trying all morning now.
Let me start with the good news because there isn't any...
This thing isn't coming off. None of the seemingly screwable parts are moving, no matter what. Either the previous owner glued them together somehow or the knob is a single piece. I've almost destroyed the area where the shiny ring is attached trying to rotate it with the pliers, so now there is no turning back, i have to get it off.
My options now are :
1. Find out who makes it and send them an email asking how to get it off lol
2. Buy one off ebay or amazon for 8 quid or how much they are and see how it comes together
3. No, i will not cut it
4. Change the whole gear lever mechanism
Any other suggestions are MOST welcome, even though all logical ones were applied.
Alex