Here are a a couple of photographs I took at the Richard Seaman Memorial Trophy meeting at Oulton Park in 1971.
I've featured this car before (on 11 May 2012) at the Richard Seaman Memorial Trophy meeting in 1970. It's designated as a 1957 Ferrari 625 GP Monoposto, serial number 0712, which was built for New Zealander Pat Hoare and you can read something about the car and see more photographs of it here.
Not a very good photograph, but it shows the car on the Hill Top straight leading to Knickerbrook corner. I don't have the programme of the event, but the owner of the car at that time was Nigel Moores (of the Littlewoods Pools family), so he's probably driving it here.