This is the spec for the Blackburn Skua. In his book Skua!, Peter Smith says:
Has anyone any information and ideally drawings of any of the proposals by Avro, Vickers and particularly Armstrong, please?
[as well as Blackburn, presumably]O.27/34 was restricted to three firms only. Hawker and Fairey were considered most suitable, with Armstrong [-Whitworth?], Blackburn, Bristol, Gloster, Vickers and Westland in the second group. Other commitments whittled these down to Blackburn, Hawker and Vickers, although Armstrong which had already submitted similar proposals for a fighter/dive-bomber with the Hyena power plant, were permitted to have their design evaluated in the same tests. In the event the short list included designs from just Avro and Vickers Development.
Has anyone any information and ideally drawings of any of the proposals by Avro, Vickers and particularly Armstrong, please?