greybeard I do know the number is non transferable ,it says so on the V5C all the paper work I got with it from the morris register says it was the last of the 2 door--- a mistake I think as the log book says 4 door which it is. it is now all roadworthy but was last on the road in 1975 owned by a mrs singh gill of surrey who passed away and her garage owner husband put it at the back of the garage. it was rescued in 2008 by a chap in kent called mr russell who was morris register national rally organiser .then a year later it was bought by the late mr harris a colleague of mr russell . mr harris ' widow sold it to a mr childs in 2014, then my mate keith got it then I got it. I think the reg had to be claimed from the old buff log book because there is a letter from DVLA dated 2015 referring to a request to register it under the old number and they have sent his £25 fee back saying they have registered it under the original number having been satisfied with all the old paper work and correspondence from the morris register people , so reg is its first one retained----HDG 317