I tended to use metcheck, but recently have found it to be a bit iffy.

I usually find metcheck OK- as long as you don't trust it more than 48 hours out.

MWIS is by far the best, but has limited area coverage

met office

druidh is right though – not more than two days out.

and any more than three days out is usually little better than guessing.

sea weed and Pine cone for me…..

The BBC one is the best. It's always guaranteed to be exactly the opposite of what it says. Every time……

xcweather.co.uk for me

accuweather and they have a great iphone app too

No one site, if they all agree then you can have some confidence, if they all disagree then it's anyones guess….

I don't really trust any of them anymore. Will usually have a nose at the weather on GMTV and check the MWIS though, just to get a rough idea.

sat24.com
meteox.com
bigger picture world weather meteo
and the met obviously.

bbc and the met office
Both usually miles out

Combine XC weather with Windguru. Windguru only applicable if you live say 20 miles from the coast , as thats where the locations are. Its normally very accurate in the 48 hour /72 hour forcast.

None – they're all lying, deceptive rubbish!

A combination of metcheck, bbc and xc weather. Sometimes they're similar.

Met check and beeb to get an idea of the weather pattern then a look out of the window to see what is happening locally. Usually pretty accurate for 48 hrs