Mountain Weather Information Service http://www.mwis.org.uk/
The Countryside Code https://www.gov.uk/government/publications/the-countryside-code
Ordnance Survey – http://ordnancesurvey.co.uk (Ideas, maps, walks)
Walking Britain – use browser, ideas
Plas Y Brenin – National Mountain Centre, courses, lots of information and links on their website
Mountain Training Association – http://mountain-training.org (training courses)
British Mountaineering Council – http://thebmc.co.uk (training courses, information)