I came across these links today.
BE771 2014 http://bringatrailer.com/2014/01/31/1960-ac-bristol-aceca/
BE 771 today
http://www.craveluxuryauto.com/web/2234/vehicle/19816043/1960-AC%20Aceca%20Bristol%20Coupe-AC%20Aceca%20Bristol%20Coupe
I'm seriously confused.
It looks like the second link contains some inaccurate information. BE771 was first advertised by Interesting cars.com last year, it looks like it didn't sell so either they or the owner seems to have had the car repainted, re trimmed and converted to LHD.
I guess the thinking was that LHD made the car more appealing to the US and mainland European markets. It seems this paid off, as I think the car then sold at the Bonhams Retromobile sale in Paris this February and now seems to have crossed the pond.