What Brac said covers my position also which is I can't think of any situations in the U.K. where a 25 would be of any real use to me.

I don't want to pour cold water on the likelihood of success but if I recall correctly, Ilford was asked and ruled out making a 25 speed film, presumably on the lack of a business case for it

Maybe Foma is small enough to make it a success but I'd be doubtful