I have to identify this unknown Euphorbia for our website

I have to identify this unknown Euphorbia for our website

I have to identify this unknown Euphorbia for our website - Global : eastlondonnature.co.uk is a 'grass-roots' natural history group based in Forest Gate. London. Every

eastlondonnature.co.uk is a 'grass-roots' natural history group based in Forest Gate. London. Every year it organises a trip to aplace of botanical interest in Europe, and the photographs are added to the website. I am unable to identify this Euphorbia and would appreciate help.
17 Aug 2018
martagon