Hi Simon,
Thanks for the tip. I have contacted them but they could only give me the Rover part number and not the Bosch number. I have now found out that the correct Bosch 4 point plugs are FR78X type and I have found a set of 4 on ebay for under £20 which I think is a good price. These plugs should fit all Morgans with the Rover M16 & T16 engines.