Thank you,Wunper. Just for the record, I think that you will find the correct name for the airfield prior to DeHavillands moving there from Stag Lane, was Hatfield (Chiswick), Herts. Chiswick does not refer to the west London location. Actions Stations,page,113, refers.
The following clinched it somewhat. The late Alex Henshaw, M.B.E. overhead Hatfield in a Mew Gull. The painting is by courtesy of R.A.F-Art.com.
Open House.