St George's Day isn't a state holiday, though there has been occasional pressure to make it one (at one point, sadly, from the Conservative party; they wanted to abolish May Day because they thought it was Socialist). It happens to fall on a Saturday this year, though, so a lot of people won't have to go to work.

The intention now is to reinstate the day as a celebration that everybody can enjoy and be part of, and reclaim it from right-wing elements who have tried to hijack it as some kind of separatist symbol. George being patron saint of so many different places and things presents all sorts of opportunities for celebrating English traditional culture as part of a much bigger, international thing. I do hope that nobody thinks of dyeing the beer red, though.