If you want to link your site then email me (contact link at bottom of page).
British Society of Echocardiography
FEEL UK (focussed echo)
Echo in context (all the basics excellently presented)
The Intensive Care Society
European Society of Intensive Care Medicine
Continuing Education in Anaesthesia, Critical Care and Pain
Critical Care Medicine Tutorials (my inspiration)
The best anatomy site ever (free if you register with your GMC no.)
AnaesthesiaMCQ.com (excellent physiology resource from Kerry Brandis in Australia)
Pulmonary and Critical Care Medicine (keep up to date with latest evidence and current opinion)