You may find the following links useful.
Breast Cancer Support
https://breastcancersupport.org.uk/
The British Lymphology Society (BLS)
BSN medical Limited
https://www.bsnmedical.co.uk/bsn-medical.html
Cancernet - UK
Cancer Research UK
https://www.cancerresearchuk.org/
The Leg Ulcer Forum
The Lindsey Leg Club Foundation
Lipoedema UK
The Lymphoedema Support Network (LSN)
Macmillan Cancer Support
MLD UK
The NHS
https://www.nhs.uk/conditions/lymphoedema/
Tissue Viability Society