Octopus allow it but only with one specific charge point & certain BEVs. The link is
hereHilarious - only works with a no-longer-available charger and 3 cars - 1 a PHEV, and 2 Nissans! What you might call “exclusive”

A common business problem. You can kill your company by failing to bring new products to market quickly enough. And you can kill your company by rushing to market with a poorly developed immature product. In a fast-changing situation like EV technology this must be a nightmare to get right.