Ive been using MeteoGroup's "Weather Pro App on my iPhone for a few years and it is generally excellent. I paid for the Premium version and the breadth and depth of content makes the BBC Weather forecast look a bit sad.
I lost confidence in the Met Office 5 or 6 years ago, they seems to have become, like other UK Government organs, more concerned by nannying us rather than providing clear information upon which one can make an informed decision.
