first time of doing this , so i hope i get it right , i am carrying out a repair job on a customers shower cubicle and it is a fordham bifold , the customer says that they are no longer trading so any info on parts would be great , in particular it is a square plastic block that the door mounts and pivots on.
https://www.showerpart.co.uk/ Might know where they can be obtained, but I think you may struggle to source them.
http://showerdoorrollers.co.uk/obsolete-shower-door-rollers/124-fordham-shower-door-rollers-x-2.html these peeps have loads of obsolete bits
excellent advice bentspanner , i contacted them and got a reply to my email in under 5 mins ( flippin amazin ) , they sent me a diagram showing parts with numbers , i told them what parts i wanted and they sent me an invoice, all done in under an hour , parts arrived by special delivery this morning , the only downside is that they told me that replacing the blocks is quite a long winded job .