Heron / Dove
The Heron & Dove are near identical until one counts the engines - I presume the simpler Dove came along first.
As BAe used to have Doves as comm's hacks, I've done a lot of happy hours in them, including going out of the upper escape hatch to waist level at 150kts for photography, and being in the right hand seat ( for a jolly ) when a Concorde flew underneath us on climb-out from Heathrow.
I must admit the only Heron I saw in the flesh was the Admirals' Barge.
There was a post recently that the Dove / Heron was actually a German design, grabbed as reparations - any truth in this ?
My ex's grandfather ( still in amicable contact ) was the late Robin Milne, Test Pilot on the Dove at least,* not sure about Heron.
Still I'd be interested to know if there really was a German input - must admit it felt unlikely to come apart any second, so probably not pure De Havilland !
From a Hawkers type...
* 'Bob' Milne was also Test Pilot on many other types.