Like 100Ms, 553 made and 3000 still in existence.
303 of the original 553 are included in the BJ8 Registry with one or more owners/ex-owners identified, or have been advertised for sale, and are still in existence.
241 have no owner at all recorded or otherwise turned up and may or may not still exist.
The original engines for 5 are now installed in other cars, which may or may not indicate that they no longer exist due to donating their parts.
1 (chassis 40861, if anyone is interested) had its original VIN and body plates sold at the Bonham Goodwood auction in September 2018 as part of a collection. They weren't interested in pulling the plates from the auction and sending them to the registry to preserve them until/if the original car turns up.
3 have been confirmed as scrapped.
Some restorers have fallen in love with gold, so there may be 3000 of them running around now.