On Tetenal's UK website you can still order Tetenal RC paper and it's competitively priced. I bought some secondhand Tetenal Vario Ultra on e-bay a few years ago and use it for contact sheets. It seems fine.
I dont know if this is same as Tetenal Work paper. Strangely enough I don't think I have ever seen a thread on Tetenal B&W paper until now on APUG although you'd think that we must have some users other than phaedrus for whom it is their stock paper, just as we have regular Ilford, Agfa, Forte etc users
pentaxuser