Now that you mention Mauri it rings a bell. I was once looking for anything on Mauri yeast, and found ENSIS Sciences catalog instead, which reminded me of both Mangrove and SPL Intl, that produces kits and yeast for it via kind of OEM. Bulldog and Crossmyloof seem to be in the same boat with the same yeast more or less.They're a New Zealand company manufacturing in the UK. That means that dealing with Munton is particularly easy, Lallemand is convenient, there's a close cultural connection to Coopers and Mauri
It makes sense for Mangrove to source wine yeast from Mauri too. See ENSIS above for the list or at Mauri's AB Biotek's siteI don't really follow the wine side, but MJ have an extensive selection of dried wine yeasts. I suspect they track the Gervin wine yeasts made by Munton but I don't know. Lallemand are very strong on wine yeasts, Fermentis haven't been big on them in the past but are getting into them.
I tried the m15 in an OG 1.064 porter, and it stopped a couple days ago at 1.023(had hoped for maybe 16 or just under 20). Would m42 be a good workhorse-strain to keep at home for darker beers in general and stronger beers in particular?