Thanks for the feedback.
I did check the filter carefully Jon and found nothing which I found odd, hence me asking...
As for taking my filter to Halfords, well, if I could I would have but unfortunately I can't. There are 1000's of threads posted of people asking for help on part numbers and didn't get the sense asking is frowned upon.
If someone has some constructive info on the original ask, I would be very grateful for it. The MMC part number that I found which I think is correct doesn't bring up the FoMoCo equivalent when doing more searches on what alternatives are out there.
Thanks,
P