I'm not a Londoner, but I am British, and so feel qualified to say that you don't need to feel embarrassed :) I've travelled with over 100L of luggage on the Tu

I'm not a Londoner, but I am British, and so feel qualified to say that you don't need to feel embarrassed :) I've travelled with over 100L of luggage on the Tube before - it's my contribution to the trains' traction!