UK SAR and Related Organisations

UK SAR Operators Group
Mountain Rescue England Wales
MCA 
Re-Search - Evidence based practice in Search
SARDA England
Dartmoor Rescue Group
Chiltern Air Support Unit
Gosport and Fareham Inshore Rescue Service
Ogwen Valley MRT
RAPID UK
Royal Berkshire Ambulance Trust
SAR World 

Lowland Search Dogs

Lowland Search Dogs UK
Lowland Search Dogs - Southern
Lowland Search Dogs - Sussex
Berkshire Search & Rescue Dogs

International SAR and Related Organisations

SARworld SAR Community Website
SARINFO BBS
Search & Rescue Society of British Columbia
TechRescue