....that the UK MO does not actually make its 3D model - tephigrams - available other than to heavily paying commercial users anyway....
If you want to get really serious about weather, go here -
http://www.wetterzentrale.de/ . Although the Met Office won't let you and me have raw data without cash, they have agreements with other world service providers such as NOAA to share each other's data. And most other providers around the world do it for free, because they are supported by local taxpayers. They happily upload all the data they have whatever it's source. Wetterzentrale collates a lot of this stuff and you'll find it under "TopKarten". You'll find Met Office synoptics under Topkarten > Fax > Bracknell, and more of their material under Topkarten > UKMO.
B