There are a couple and the parking spaces are restricted for use only whilst charging, the cost is also double or so what I pay at home.

So basically for the sake of saving pennies I would have to hope that space is free, park in it, then move the car later when it's done, probably use some weird app because there's no normal way to pay, etc.

If I forget, then I get a £40+ parking ticket which would wipe out weeks/months of savings.

I don't own a PHEV but if I did I think I'd probably do it a few times for the novelty factor and then give up. It's not practical at all.