It will be a standard (grey) 100A 3 phase service head.
Octopus, OVO and possibly EDF are pehaps the better supplier’s if you want 3 phase metering.
Providing you are willing to change to a supplier offering domestic 3 phase metering and agree to have a 3 phase meter point, you can install a 11kW or 22kW charger at anytime that suits you. However, its worth noting, have a charger that is rated higher than the cars onboard charger, will cause your charge point to throttle, in which case a variable charger, that is able to switch between 7,11 and 22kW may be worth it, especially if you have 2 EV’s, who’s onboard chargers are rated differently. (Most EV’s today come with 11 or 22kW onboard chargers)
3 phase chargers are common;y available for not a lot more than the equivulent 7Kw chargers, with variable costing a bit more. ProjectEV, Easee, Zappi, Pod point along with some decent lesser known commercial brands do sing or dual 22kW. Wallbox Copper SB is one of the cheaper recognised brands 22kW charger, which can be had for under £600. Unlike Ohme they all offer lifetime 4g/wifi capability.
Something to think about in the future mabe 🙂