This one lfs
I go to had them this time and it's unusual to find soo much coralline, some of the LR
I purchased for my original 29g months ago had some purple but nothing like this. I think the purple up the store adds to the rock tank makes it get that purple.
I've heard it;s real tough overseas to get stuff, I feel your pain. Wish you luck, and if you haven't seen theres a section for the UK and the isles under the regional forums I believe it is, you might be able tog et some good leads there.