Onetap
LE

It's just a shadow on the shiny surface of the tail, that appears odd because the two surfaces slope downwards towards the fuselage. If you look at the drawing on the Wikipedia site, it eventually make sense. The shadow on the starboard wing just adds to the confusion because the wing slopes downwards.I thought of that. But look at the shadow on the inboard section of the starboard wing. The sun appears to be on the left hand side of the Beverley and making the fuselage shadow angle towards the rear of the aircraft.
And if it is a shadow of the port vertical thingy, what is it on? Something ain't right..............