Haddrells of Cambridge produces 100% natural New Zealand bee products, manufactured to the highest quality using environmentally sustainable methods. Haddells UMF 20+ Manuka Honey is the highest rated UMF honey in it's range, having twice the antibacterial activity of UMF 10+ Manuka Honey. Hills Laboratory independely test Haddrelll's of Cambridge UMF® Manuka honey with each batch labelled accordingly to test results.