There's plenty of Fuji Neopan 400 available in the U.K, I think that Fuji has different policy for different pats of the World for what they export to them, this company in the U.K have it in stock in 35mm and will ship internationally http://www.speedgraphic.co.uk/delivery/354_i.html
I haven't purchased a single roll of Fuji film since they stopped Neopan 400 in 120 size.
I washed my hands of Fuji when they stopped Neopan SS. They said 24exp was done, but 36exp would keep going. Surprise! 36exp is also now done. Plus they nuked most of their slide films and instant peel-apart.
But what should I expect from a costmetics and digital camera company?
Yes we've been through this on the thread started by a German colleague who reported that Fuji 400 in 35mm had been re-launched and which most of us concluded meant that there was no reason why 120 couldn't be re-launched as well but we never go to the bottom of why no 120 was re-started. We all speculated about reasons of course but until we have direct access to Fuji and it wants to communicate like Ilford does then speculation is all it will remain