The Air Ministry appointed Ashley Pope to oversee the factory because one of the aircraft in production at the time had a large 90 hp (67 kW) engine which was vital to the war effort.
He reported the following "Having made a notable contribution to the war efforts of the nation by manufacturing large numbers of aeroplanes, Messrs. Hewlett & Blondeau Ltd., of The Omnia Works, Leagrave, Beds.
In the first place, on the ten acres of freehold land which form the works site has been built a series of up-to-date substantial shops, fitted with the latest type of machinery and replete in every way with labour saving devices.
The whole of the 120,000 sq ft (11,000 m2) of buildings is commodious, airy and thoroughly modern, for the works were of 'mushroom growth' so common during the war, albeit it cannot be too strongly emphasised that they are solidly and well constructed.
A decision was made to close the works and Fuller, Horley and Son & Cassell of London arranged a six-day sale of the site and contents of the factory starting on Tuesday 19 October 1920.
The plant, machinery, stock and effects sold well to a large number of businesses including Vauxhall Motors and Hayward Tyler, the latter still having a factory in Luton.