The grave of Lt. John Irving can be found in Dean Cemetery, Edinburgh. The grave stone is a cross with a scene of the two ships disembarking supplies. It can be found by the gate to the Modern Art Gallery. It's a poignant reminder that this is a true life event in which many people lost their lives.
One of the original titles for this episode was "The Silver Swan".
Paul Ready (Henry/Harry Goodsir) & Richard Riddell (Sgt. David Bryant) also worked together on Bodyguard (2018) as Rob MacDonald & Sgt. Tom Fenton respectively.