WatchHouse Hampstead Heath

Open from 7am seven days a week, this Hampstead outpost of the WatchHouse group — which also runs spots around Fitzrovia, Millennium Bridge and Canary Wharf — brings its coffee, design and hospitality ethos to one of north London's leafiest corners. There's outdoor seating for finer days, wheelchair-accessible entry and seating, and a 4.7 rating from over 700 reviews to back it all up.