general election

Can the date of the general election be put back? Let's say Sunak stays to the bitter end, setting the date of the next general election as Jan 26th (maybe Jan 27th) 2025. Shortly before that date something happens - maybe there's big snowstorm, a red weather alert affecting much of the UK...

What happens if it's the day of a General Election and there's an extreme weather event? Like right now with Babet or the 1987 storm. Is the election postponed? With trees down, roads flooded, and whatnot, people might not be able to get to polling stations.