Other than the well know companies I do not know if anyone else has fancied having a go. Anyhow here are some offerings from Ilford for 50'/100' rolls of varying width.
http://www.ag-photographic.co.uk/ilford-fp4-426-c.asp
Splitting & perforating bulk film
Moderator: Andreas Wideroe
Splitting & perforating bulk film
New web site and this is cine page http://www.picsntech.co.uk/cine.html