Crystal #1442 and movement ring MR504 needed.

Hi,
I know its a long shot, but does anyone have any of
the above parts, needed to finish a watch restoration. I live in
UK, so I'm finding most NOS/spares/alternatives are
generally in US.
Hopefully one of you can help me find the proverbial
hens teeth that I seem to be searching for.
Regards,
Chris.