Two cars photographed at the Gold Cup meeting at Oulton Park in August 2008 and both incorrectly listed in the programme of the event.
This one is shown in the programme as Rudolf Ernst's 1952 Lotus XI with a 1460cc engine, presumably the Coventry Climax unit, but this model was made from 1956 to 1958 and was always referred to as a Lotus Eleven. I think it's a 1957 model.
This is another Lotus Eleven, that of Ivan Dutton, but the programme calls it a Lotus 11 and says that it has an 1100cc engine, also presumably the Coventry Climax unit.
Here's Ivan Dutton at Lodge Corner during the Guards Trophy GTSR Race.