Not giving away any insights here.  S & M stands for Sausage and Mash, classic British comfort food.

Wasn't all that simple to order.  Played 20 questions with my waitress.  "Which sausages (suffolk style and lamb), how many (2), what kind of potato (bubble and squeek) and which gravy (red onion)." Not really complaining. I liked the approach. And the meal.

I also ordered a side of Mushy Peas.  Kind of a cross between American peas and beans.  Quite good, especially when topped with a pat of butter.