Every time I hear bangers and mash, I think of a talk show I saw many long years ago when I was young. They had a guest from England who was demonstrating their food. He put a pile of mashed potatoes on a platter and then stuck hot dogs in it. Even as a young kid I thought that was pretty funny.
Needless to say your bangers and mash look a whole
The sausages look like what we call brats (bratwurst.) Do you know if that's what you have?