New lever time...
In which case, you need to get under the car to do the following...
1. Release the tab clips holding the boot to the level support bracket, just behind the box and above the prop shaft.
2. Pop of one of the now visible square spring clips and slide the pin and second clip out. This disconnects the lever.
3. Inside the car, pop out the frame around the gater. Just pop your fingers between the lever and the rear edge and pull up. Gaiter lifts up and off the gear lever.
4. Remove the two Phillips screws now visible. Push the console trim forwards and carefully lift the front edge of the lever hole up until it is pressed against the dash and slde it backwards. Once the front is free, you should be able to jiggle it out from under the handbrake. (removing the handbrake trim is optional but means removing the armrest as well and is more work and doesn't alter the fact that the handbrake is the primary obstacle).
5. The gear lever is held to the car by four torx bolts and a pair of curved plates and the retaining cup bearing. I can't recall whether they are removed from above or below, I think it bolts up from underneath... as it is really easy to drop the plates down under the carpet.
That's about all there is to it.