Although they won't admit it in so many words, the FA was caught badly on the hop with the Euro Final, circumstances having combined to create a (predictable) fiasco, That said, there is no reason why that shouldn't have been a one-off. Certainly the FA seem pretty confident that they would be prepared for any future such-event and take precautions to prevent it.
And their reassurances seem to have persuaded UEFA, since they are continuing to throw events London's way, eg:
UEFA and CONMEBOL have today signed a renewed and extended Memorandum of Understanding (MoU) lasting until 30 June 2028, following on from the successful MoU of February 2020.
While the terms of the original agreement remain, this renewed MoU also contains specific provisions related to the opening of a shared UEFA/CONMEBOL office in London and the potential organisation of a variety of football events.
The first such event will see UEFA EURO 2020 winners Italy face CONMEBOL Copa América 2021 winners Argentina in a "Finalissima" at a stadium in London, on 1 June 2022.
The shared London office will be officially inaugurated at the beginning of 2022.
In the context of UEFA and CONMEBOL fighting back against FIFA's plans for a biennial World Cup, it is significant that they are holding the first Finalissima in London and basing their new office there.
In addition, UEFA have already announced that London will host the 2024 CL Final (St.Petersburg 2022, Istanbul 2023, Munich 2025):
https://en.as.com/en/2021/07/16/socc...74_212654.html