Well she was an aircraft carrier, after all!

You’re right, bms44, should have enhanced the fin first then looked at it instead of making my Seal guess! It looked rounded to me at first. I agree with IIIF now, especially as I don’t have good references to find out any more.
I can fiddle around a bit more with Photoshop but I think the serial is under the tailplane from this view.

Someone was probably hanging their washing out to dry on deck and forgot to remove it!
Reminds me of those message pick-up contraptions that used to be on army co-operation aircraft.

I am also disappointed not to be counted as a Forum stalwart, by the way, I’m doing my best!

I think it’s a Fairey Seal fleet spotter/reconnaissance bomber. For example, 822 Squadron Seals were aboard HMS Furious between June and November 1936, but these aircraft could have also been aboard at other times.
The general characteristics seem to match those of a Seal, anyway.
Anyone else prepared to have a go?

Weren’t those sucker arms telescopic?
As a matter of interest, when did Daleks last appear on TV? I seem to remember them appearing in black and white episodes around 1963, but I’ve never seen any since then.

Wellington Mk X navigation trainer? Last saw one of those at Swinderby aeons ago!

I can just picture Robbo rolling around the floor laughing his socks off, but of course part of the game is that he’ll never admit being the instigator!