Penicuik Weather
The original Penicuik Weather Station
Weather & Aircraft Networks and Data Feeds
There are many privately run stations like Penicuik Weather across the UK providing uploads of their data to professional services.
Given the resource some of the larger players in the weather and aviation industry have, it is often surprising that these companies actually *want* the data from small sites with typically uncalibrated equipment!.
However, they do, and range from the MetOffice to professionally run amateur services.
I expect it comes down to cost, on one hand you have the free data provided by amateurs, against the extensive cost of maintaining a fairly vast array of monitoring stations, with communications and servicing costs to maintain them.