- Alpha Laboratories
- Birmingham Calprotectin EQA Scheme
- EQUALIS Calprotectin EQA Scheme
- Crohn’s and Colitis UK
- NHS – About Crohn’s Disease
- NHS – About Ulcerative Colitis
- NICE Guideline NG129 – Crohn’s Disease: Management
- NICE Guidleine NG130 – Ulcerative Colitis: Management
- NHS – About IBD
- NHS – About IBS
- IBS Network
- Bowel Disease UK
- Bladder and Bowel Foundation
- British Society of Gastroenterology
- Guts UK Charity
- CICRA: Better lives for children with crohns and colitis