Yup, Met Office, Rain Today and XC Weather for me - I'll usually check all three, but even just a combination of just Met Office and Rain Today normally makes sure I don't get caught out. Given the changeability of British weather and the incredible amount of data collecting and processing involved, I'm in awe of how accurate (normally) the forecasts are. Seriously. Though that still doesn't stop me getting annoyed when they do get it wrong!