Aviary ★ 4.2
£££FinsburyMon-Fri 06:30-00:00, Sat-Sun 07:00-00:00
The 10th-floor terrace on Finsbury Square belongs to the Montcalm Royal London House and runs an all-day operation with City skyline views and a weekend Birdsong brunch that gets a DJ in.
Tip: Sunset slot 18:30 to 20:00 is the best light, book the terrace not the indoor section.
12th Knot ★ 4.5
£££South BankTue-Wed 17:00-00:00, Thu-Sat 17:00-00:30
The Sea Containers 12th-floor cocktail bar on the South Bank looks out at St Paul's and the river, with a cocktail programme that earns its rooftop premium and small plates that justify staying for dinner.
Tip: The window seats book out for sunset, request one when you reserve. The corner with the Blackfriars view is the prize.
Madison ★ 4.1
£££City of LondonMon-Sat 12:00-00:00, Sun and bank holidays 12:00-22:00
The One New Change rooftop bar and restaurant runs eye-level with the St Paul's dome, with a modern American menu downstairs and a long terrace bar that is the closest seat to the cathedral.
Tip: Walk straight through the restaurant to the bar terrace, the queue at the front desk is for diners only.
Radio Rooftop ★ 4.1
£££Covent GardenSun-Wed 12:00-00:00, Thu-Sat 12:00-01:30
The 10th-floor terrace at ME London is the central rooftop with the 360-degree West End view, and the gin-and-tonic list and modern Asian plates keep it from being only a view bar.
Tip: Book a window banquette on the north side for the Trafalgar and St Martin's view, the south side gives the river.
Nightjar ★ 4.7
£££ShoreditchTue-Thu 18:00-01:00, Fri-Sat 18:00-02:00, Sun 18:00-00:00
The basement on City Road behind an unmarked door is the standard against which every London speakeasy is measured, with nightly live jazz and a cocktail menu that takes the prohibition era seriously.
Tip: Bookings only, walk-ins are turned away after 19:00. The 22:30 second set is when the band loosens up.
Happiness Forgets ★ 4.8
££HoxtonDaily 17:00 onwards
The Hoxton Square basement run by Alastair Burgess pairs a tight rotating cocktail list with a no-nonsense room policy that has kept it on the World's 50 Best Bars list more or less continuously since 2014.
Tip: Bookings open one week ahead at 12:00 sharp, set a reminder. Walk-ins get the bar if anything.