By April 1954, the track had grown to 2.23 miles in length and within a year of the opening meeting had grown again, to 2.761 miles. On Easter 1975, another circuit layout, measuring 1.654 miles, came into use. Oulton Park is unique amongst the new post-World War II circuits in that it is a true road circuit whilst its contemporaries were, with one exception, converted airfields (the exception being the short-lived Blandford). It has something in common with Mallory Park in that it can trace its history back a very long way (possibly as far as Roman times) and is mentioned in the Doomsday Book as ‘Aleton’.