This is one of the competitors in the Pre-1959 Aston Martin Race at the Aston Martin Owners' Club's meeting at Oulton Park in September 1986.
It's the 1933 Aston Martin Le Mans of Tony Armstrong and it was competing in the Pre-War 1½ litre class. The Aston Martin Le Mans was a successor to the International model and had a 1493cc 4-cylinder single overhead camshaft engine. It had either a short or long wheelbase (102 or 120 in) and a two-seater (as here) or 4-seater body. I've shown photographs of the Aston Martin Le Mans previously, on 4 September 2016, 15 November 2016 and 28 January 2017.