UK - Durum Wheat Flour
I've found one new source (and hoping for another source) of durum wheat flour in the UK!
Limone on Highgate High Street N6 (delicatessen, does freshly prepared sandwiches, lots of yummy deli ingredients, not cheap but good quality and very friendly) are now stocking durum wheat flour (semola rimacinata di grano duro) - the brand appears to be Fior di Molino, Molino Rossetto spa, Pontelongo
£2.25 for a kg
One to add to the London stockists
I'm hoping there is also a deli in Cambridge that stocks this - just waiting for the details!!