7-day Snow Forecast
Snowfall charts for each 12-hourly period up to 7 days ahead, accumulations for past and future periods, and current weather.
http://www.snow-forecast.com/maps/uksnowlast7days.php

AuroraWatch UK
Offers data which may predict an aurora, pictures of past displays, practical projects and email notificaton of favourable conditions.
http://www.aurorawatch.york.ac.uk

British Weather Services
Provides historic weather information and predictive data for the insurance industry and related businesses.
http://www.britishweatherservices.co.uk

National Data Buoy Center
Locations of and readings from moored buoys around the British Isles.
http://www.ndbc.noaa.gov/Maps/United_Kingdom.shtml

Roger Brugge's Weather Page
British weather diary site with links to data and forecasts worldwide.
http://www.met.reading.ac.uk/~brugge

Royal Meteorological Society
Shows the history, qualifications offered, membership benefits, educational activities, planned meetings, and publications.
http://www.royal-met-soc.org.uk

Severe Weather UK
News about recent severe weather events along with background information about conditions such as tornadoes and severe thunderstorms and their effects. Includes email lists and discussion forums.
http://www.severewx.co.uk

United Kingdom Recent Marine Data
Source of meteorological and oceanographic measurements for the marine environment.
http://www.ndbc.noaa.gov/Maps/United_Kingdom.shtml

Weathercall
Describes a forecasting service provided only by telephone, fax, e-mail and subscription.
http://www.weathercall.co.uk

XC Weather
Aimed at any flying enthusiast, XCWeather provides real-time wind, temperature, pressure, visibility and weather information for the UK in a friendly graphical context. The site uniquely provides a synoptic animation of recent pressure changes in the UK.
http://www.xcweather.co.uk