And....it worked pretty much exactly as designed - initially only the largest stations carried it because they could justify the storage costs, and eventually it disappeared from almost everywhere. Just before covid there were still 3 small garages selling leaded petrol by the drum, but afaik they all stopped doing so.
And regardless - you can stil buy actual real Tetraethyl Lead fuel additive which turns your petrol into actual real 4-star leaded petrol, just like in the old days:
https://www.demon-tweeks.com/tetraboost-e-guard-15-fuel-addi...
Aviation gasoline is probably the one market that still keeps it afloat, when/if piston aviation switches over the remaining market is small and insignificant.
Sounds like the government is being lax. From the aircraft owners and pilots association:
>So the Government's indifference is not going to help us in the UK if the *supply of leaded AVGAS is stopped, the UK CAA have not appoved new fuels, there is no infrastucture or supply chain in the UK. We keep beating the doors at the CAA and DfT...