Despite the long shadow cast by the Shard, the Heron Tower’s 40th-floor bar-restaurant is still Britain’s highest eatery – and worth considering for a relaxed, comfort-filled meal based on small-plate sharing menus. Marble table-tops and cream leather cosset, though the simple wooden tables by the windows are best for the widescreen, riveting London panorama. The laid-back mood diverges from sky-high dining conventions, but sadly the elevated prices do not. Gripes over “dry” dishes aren’t unfounded, and some find the menu’s super-sweet American streak too sickly; nevertheless, the restaurant’s satisfying, syrup-covered eponymous dish earns consistent praise. Spicy ox-cheek doughnuts covered in paprika sugar provide an interesting contrast between sweet and meat, and the kidult feel continues in rib-eye steak with Marmite hollandaise. The kitchen’s 23-hour opening (closed 5-6am) makes Duck & Waffle more accessible than most hot tables. It’s also a “great setting for a breakfast meeting”. A unique City proposition.