The number is for the US. Here is the UK Support info:
Support: 0370 900 5501
Monday- Friday, 8:00 – 17:30 GMT
We no longer make that device. You can try calling Parts to see if they still have any replacement trays you can purchase: 1-800-822-2200
We have a workcentre 6515. Printer works well but only the paper tray just cassette broke. I just need to find a new paper tray cassette. Any one an idea where I can order this paper tray cassette?