Now over 35 years old and still a major presence on London’s coffee scene, Monmouth seems to be busy all the time. On Friday and Saturday, it’s heaving – be prepared for a lengthy queue. The location at the southern end of Borough Market accounts for much of the popularity, but the unfailingly high quality clinches the deal. Food (breads, pastries and so on) is simple, well chosen and low maintenance for the staff. They have other priorities: making and serving coffee. Which they do as well as anyone in London.