I changed to a private plate this Monday just gone, I did confirm with motability first regarding the insurance and rac and was assured it would automatically update within a few days.
The dvla transfer was a doddle and an email confirmed the change.
However the insurance and the rac still show the old reg and more worryingly the mib database shows that the new reg is uninsured.
I have spoke to motability today who have the new reg on their system but the total process from their end can take up to ten days to complete.
It’s going to be an interesting conversation with the police if anpr pings as I show as uninsured.