//Sadiq Khan extending the ULEZ to cover the whole of London was a condition of TfL funding from the Tory central government//
No it wasn’t. It is something else which critics of the government repeat in the hope that if they do so often enough eventually people will believe them:
http://www.infrastructure-intelligence.com/article/jun-2021/government-sets-tough-terms-%C2%A3108bn-emergency-tfl-bailout#:~:text=However%2C%20the%20latest%20deal%20comes,service%20levels%20that%20could%20mean
“However, the latest deal comes with a string of tough conditions, including TfL and London’s mayor being forced to find £300m of savings in 2021/22, identify new revenue sources of between £500m to £1bn each year from 2023, push ahead with controversial plans for driverless trains, review service levels that could mean severe cuts across the TfL tube and bus network, and also review and potentially slash its current pension scheme for TfL staff.”
There is no mention of ULEZ expansion being a condition of the funding.
Just in case that’s not enough, here are the minutes of the Mayor’s “Question Time” in City Hall, dated 22nd July 2022:
https://www.london.gov.uk/about-us/londonassembly/meetings/documents/s100100/Appendix%202%20-%20Questions%20to%20the%20Mayor.pdf
To save you wading through it al, this is on page 26:
Neil Garratt AM: "Thank you, Chair. For the proposal to expand the ULEZ to the whole of London, who is the decision maker to do that or not do that?"
Sadiq Khan (Mayor of London): "Me."
Neil Garratt AM: "It is your decision whether that proceeds or not?"
Sadiq Khan (Mayor of London): "Yes."
It was Mayor Khan's decision to expand ULEZ, and his alone.
As an aside, even if that evidence was not available, if the expansion was a government decision, don’t you think that somebody among the opposition would have discovered that by now and made it known? This is especially so when you consider the controversy that expanding ULEZ has created and the part it was alleged to have played in the result of the Uxbridge by-election. But they didn’t and there’s a very good and simple reason for that – it isn’t true.