Founded in 1978 on Monmouth Street in Covent Garden by Nicholas Saunders and Anita Le Roy. Beans are sourced and roasted from single farms, estates and cooperatives. Alongside their coffee drinks, Monmouth Coffee Company sells their whole-bean and ground coffee, as well as a variety of coffee-making accessories. Pastries and sweet treats are sourced from Little Bread Pedlar, Sally Clarke, and Babelle.

In March 2022, Monmouth Coffee Company ceased using disposable, single-use cups and now operate a reusable system, either using their own branded reusable cups or "bring your own".