This has been sitting around for a while with no takers. It's a 2011 E500 5.5 coupe with 97k and 4 owners, but recently had £59k spent on creating a 'one of a kind' car . I know they never made an E63 coupe back then, but still...
https://www.autotrader.co.uk/car-details/202007281777837?radius=1500&keywords=e500&advertising-location=at_cars&onesearchad=New&onesearchad=Nearly New&onesearchad=Used&sort=relevance&postcode=se17na&page=1
https://www.autotrader.co.uk/car-details/202007281777837?radius=1500&keywords=e500&advertising-location=at_cars&onesearchad=New&onesearchad=Nearly New&onesearchad=Used&sort=relevance&postcode=se17na&page=1