Hospitals:

thelondonclinic.co.uk
theprincessgracehospital.co.uk
thewellingtonhospital.com

Professional:
gordcentre.org

Services:
ahbqatar.com
va.gov (For my American Veteran patients regarding their benefits)

Other:
diabetes.org.uk (for diabetics)
nhlbi.nih.gov/chd (for Cholesterol and the Heart)
iffgd.org (A good site for information on functional bowel problems such as Irritable Bowel, Diarrhoea, Constipation, Gastro-oesophageal Reflux, Cyclical Vomiting and other issues)

Information pamphlets available as print friendly PDF documents:

Managing Constipation
Cholesterol (Hyperlipidaemia)
Diabetes Diet
Managing Diarrhoea
Gastro-Oesophageal Reflux
Irritable Bowel Syndrome (IBS)