One of the Monmouth shops is located next to the Borough Market so, taking advantage of one of our breaks, we headed there for a coffee. My sister said that they also sold their beans to other coffee places in London and apparently, the coffee was very good.
And she was right! I had an iced latte and it was delicious. They also have a few varieties of pastries, so it is perfect to spend the morning or an early afternoon.
I miss this kind of places (specialized in coffee) in Madrid so I can't wait to go back!
More info and locations here