> But since you can plug in to charge at many street lamp posts
Are these the standard UK 230V 13A fused single-phase receptacles? Those put out about twice as much power as a 120V 15A circuit protected by a breaker, 3kW vs 1.5kW
230 * 13 = 2990W
120 * 15 = 1800 * .8 = 1440W
Using those for L1 charging would be a lot better than US L1 charging.