Here we have some campaigners talking about the post-pandemic using figures from the first lockdown, when emissions were briefly very low. As I said in the OP, it was never going to last, and it's going to be found that this brief dip will be more than neutralised by what happened later, e.g. it's quite clear that in subsequent lockdowns, no significant dip in emissions occurred, and they may even have been higher than before.
Here we have some campaigners talking about the post-pandemic using figures from the first lockdown, when emissions were briefly very low. As I said in the OP, it was never going to last, and it's going to be found that this brief dip will be more than neutralised by what happened later, e.g. it's quite clear that in subsequent lockdowns, no significant dip in emissions occurred, and they may even have been higher than before.
https://www.standard.co.uk/news/london/earth-day-pandemic-lockdown-london-air-pollution-down-70-per-cent-b931060.html