My main CU is no longer made, So you cannot get the correct RCD required. My second CU is on 16mm tails but serves the heat pump and the garage, so would draw close to the 60 amp limit. The run from the CU to the selected charger site could well be 5 metres over the 15m offered.
So I could require a 3rd CU mounted on the outside wall (no room left for another CU in the house). Thus collectively, I need an idea of the cost.