I have just found a PDF file from Ilford giving development
times and chemicals needed for processing B&W slides. They
suggest Pan F and this is what they base their times on. However
the chemicals needed for the bleaching stage requires Sulphuric
Acid. Now that is pretty savage stuff and I am not sure I would
be happy using it.  There is a proprietary kit made by FOMA and
is 'occasionally' available in the UK but it is very expensive
(The words of a supplier) They are not the best company to deal
with when fulfilling orders so he told me. I will give this a
bit of thought. It is the acid that puts me off.  I have some
which I did myself perhaps 35-40 years ago then sepia toned
them. They are mounted in glass and are as good as the day they
were made. I just wanted to reproduce modern subjects the same
way.