The Met Office app has been as useful as a chocolate teapot when it comes to forecasting this snow! At 5pm I was supposed to be under drizzle, and it was showing mostly sleet from about 9pm.
About an hour ago it has heavy snow through to about 3am, and it now has light snow (which is correct), dry until 11pm, light snow until 2am and then heavy snow until 6am! It's making it up as it goes along!