There was a press D Notice about the sinking of Lancastria. The Government was concerned about the effect on public moral of so many lost on one ship. There is speculation that as many as 7000 may have been aboard, most of whom were lost. After Dunkirk the German bombers targeted ships evacuating from the Channel Ports further down the coast.
I think I read that Warcup, who was shot down three days before it was sunk by a gunner on a bomber.