try Jand C for some bromoil paper, altho you can use several other regular papers.
unblinkingeye has some information regarding this process.

Bostick and Sullivan carries supplies (i.e. tutorial's and even a video. brushes, ink).

just google on bromoil and you will find a lot of stuff. look for Gene Laughter website .

I think there are several vendors in the UK who also carry materials in kit form, or you can start putting together items from other people who carry art supplies.
I don't know why Ilord's issue would impact this process, as everything we are using comes from other company's. However, one of the papers suggested is their matt paper, however, agfa or luminous charcoal is also on the suggested list.