Rovers North is the US distributor for Exmoor Trim. There isn't anyone else on this side of the creek. This from Julian himself. If you have something custom you need done, then write to Exmoor/Julian and arrange it. Otherwise order thru RN.
I cannot say enough good about my customer experience with Exmoor and RN. Julian went above and beyond to make sure I was taken care of. Ditto Les, Arthur at RN, Kevin at Exmoor.
If you choose to go with the Exmoor products you won't be disappointed.
On a side note, there are no seat back foams for my early tray back seats. I modified the foam they sent to work. Also the seat covers for the backs came up a tad short on the bottom where the retaining rod attaches to the frame. I was able to remedy that without any need to contact Exmoor or RN. So, if you are doing a full custom job on a weird seat frame like I was, you may find some small issues.
1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
All my troubles are Rover