From what I read the work would be done by the council, and yes, I have to pay for it.
This is what I got from the council’s EV team,
“There is a small pot of money available during the trial period to help get the project off the ground and support a number of early installations. The install cost of the gully is £600, and we are covering 50% of this, so a cost of £300 to yourself. Just to be clear it covers the groundworks and Kerbo Charge product only, the EV charger would need to be purchased by the home owner.
Our highways team need to asses each location to determine the suitability for a gully (pavement size, parking restrictions, obstructions etc.). The fitment of the gully also does not guarantee you that parking spot, so we do recommend talking to neighbours etc to ensure you can access the gully for charging when required.”
Please excuse spelling/typos. Apart from being a clot it turns out I had one on my cerebellum that's now causing various problems!