AYF 239 is a March 1934 London registered Eustace Watkins Wolseley Hornet Special. It’s seen here in September 1937 as learner plates are attached by 69 year old Sir Walter Windham who was about to undertake his driving test. The compulsory driving test was introduced in the U.K. in 1935 as just one of the measures taken to reduce the carnage on Britains road’s at that time. Sir Walter Windham was an aviation pioneer who introduced the first GB airmail services. His Wiki entry can be found here.