Near real-time critical frequency, foF2http://www.convectiveweather.co.uk/ionosphere/
ITURHFProp - Propagation Predictionshttp://www.predtest.uk/
United Kingdom - HF Band Conditionshttp://www.cleanairwithultraviolet.com/bandconditions/UK.htm
Voacaphttp://www.voacap.com/p2p/index.html