The rubber seal that surrounds the neck of the fuel filler is perished on my P38. Does anyone have the part number for this?
The P38 is about 100 miles from me so I can’t take a photo of the part in question, but’s I’ll try and describe it.
When you open the fuel door you will see the pipe that the fuel goes into. There is a rubber shroud around this pipe that also attaches to the body. Mine is perished.
Any help appreciated.

Found 2 part numbers listed on Microcat, ESR3027 (which doesn't specify a year or market), ESR3973 (which is for 99 onwards but is described as a grommet but on the picture looks more like the seal inside the cap and WLR000010 which is listed as for a Discovery (https://www.brit-car.co.uk/product.php/135128/2646/fuel_filler_neck_grommet___v8_petrol___discovery_2) but looks to be correct. There's this eBay listing on your side of the pond which shows the Disco one as the replacement for both earlier part numbers https://www.ebay.co.uk/itm/LAND-ROVER-FUEL-GROMMET-RANGE-ROVER-4-0-4-6-P38-DISCO-1-DISCO-2-OEM-WLR000010-/401098865174

A “grommet”....
Only the British could come up with that. There was I looking for a “rubber thingy”.
Had I been on the other forum asking for this I’m sure that Toadhead would have chimed in with some useful bit of nonsense such as. “ when you learn to use the correct phrase to describe items you will find that members are more willing to help you in your search. Check the RAVE”
Cheers Gilbertd that was doing my head in

Looking at the dictionary definition, https://www.collinsdictionary.com/dictionary/english/grommet it most definitely is a grommet. A fairly large grommet admittedly but it is. Sometimes you just have to wonder how some things got the names they did......