[Stuart]

Would the Inauguration of the US President not clash with that week?

Why would a US Presidential inauguration have any impact in the UK? That's a one-off news event, I think you're over-selling the impact on the UK during an election campaign.

Most of the campaigning would be after New Year, so nobody would be doing it over Christmas. It's only really the final few weeks that matter.

As already stated, everyone still goes to work in January, so there is nothing to discourage voter turnout because of the time of year. It didn't stop people voting in December 2019, and all the campaigning was in the run-up to Christmas that year. I don't recall anyone being annoyed about it at the time.

Well, we'll see when he calls it. I much preferred the situation under the FTP Act as it removed this guessing game. That would have shortened this Parliament by causing the election to happen in May 2024.