Bose
As I said earlier on, they have an SLA with the CAA and are measured on two indicators only. These do not involve the timings of fronts or even wind speed ad direction - they are (I believe, visibility and cloud amount)
They can certainly claim to be meeting those, as it would be difficult not to. I was told by the Met person at Air Expo that if we wanted more accuracy in the forecast to meet, say fronts, precipitation etc, then someone will have to pay for it.
As for an example, the EGTE TAFs were wrong (sort of) on Tuesday and, arguably, on Wednesday. The a*rse-covering prob 30 may give them a get-out though.
And is it true that there has never been a forecast which has not had 'cloud on hills' in it, even when the forecast is for CAVOK?