It's going to do what every other car does over 20 years which is go down in value until the prices bottom out at around 2000GBP. The worse ones will turn into parts cars and be dismantled or scrapped and the better ones will eventually go up in value.
This topic came up a couple of years ago where I said the same thing and owners of these cars lost their mind. Nothing has changed, it's still a car, it will go through a succession of owners that can't afford to maintain them and before too long, there will be plenty of sh*t boxes for sale in the local classifieds for the sub 2000GBP range which will drive down the value of other cars because people looking at the add would not be able to understand why there are 4 E55's for 2k and less and then the odd one or two offered at 7k
This topic came up a couple of years ago where I said the same thing and owners of these cars lost their mind. Nothing has changed, it's still a car, it will go through a succession of owners that can't afford to maintain them and before too long, there will be plenty of sh*t boxes for sale in the local classifieds for the sub 2000GBP range which will drive down the value of other cars because people looking at the add would not be able to understand why there are 4 E55's for 2k and less and then the odd one or two offered at 7k