Operated by various test and experimental units, during which it flew with a Napier Naiad turboprop engine in the nose and later as G-37-1 with a Rolls Royce Tyne engine in the nose. In the latter configuration it was displayed at the 1956 Farnborough Air Show at which it made a flypast with all four Merlins shut down and feathered and powered by just the Tyne engine. It was later fitted with a radome test nose. It made its last operational flight 21 April 1961 and was SOC 3 May 1961. It was delivered to the Fire Fighting School at Stansted 27 June 1961 and was burnt there sometime in 1966/67.

After use as an engine test bed (wearing a class "B" Registration, G-37-1), with a Napier Naiad,then a R.R.Tyne fitted in the )nose,this aircraft was finally fitted with a radome test nose. S.O.C. May 5th 1961. It is shown here in the Fire Fighting School Area.