Like AW.17 i suppose , in project, had two rolls-royce F.XI aka Kestrel : AW.17 and AW.20 seems same aircraft project with different designationYes my dear Airman,and that's anther one.
Also from Putnam's book,
the AW.20.
... AW.17 and AW.20 seems same aircraft project with different designation
https://en.wikipedia.org/wiki/Armstrong_Whitworth_Atalanta - Aw.25 and Aw.26 : it was bomber version of AW.15Also from Putnam's book,
the AW.25.
https://en.wikipedia.org/wiki/Armstrong_Whitworth_Atalanta - Aw.25 and Aw.26 : it was bomber version of AW.15
From Putnam's book,
the AW.37.