V2G / V2H in the UK

I see bi-directional charging is enabled now, there's a lifetime limit of 4,000 hours or 10,000 kWh. Are there any wall boxes available in the UK market which support this? It seems like the Wallbox Quasar is one but it's only for Chademo connectors (which I think is the Nissan Leaf).

I get cheap offpeak electricity and rarely need more than 2-3% battery for driving day to day, seems an easy win if I can only find the right wallbox to fit but my Google skills are letting me down here.