
Dinner in the Sky: Restaurateurs in London are continuing to up the ante in the altitude dining stakes. One company, Dinner in the Sky, takes the concept to perhaps its ultimate conclusion: for London in the Sky, guests are strapped into their seats around a table and hoisted 100 feet into the air by crane.

Helix and Iris: Helix Restaurant and Iris Bar, part of Searcys at the Gherkin, serves cocktails with a view.

alto by San Carlo: On the rooftop of Selfridges, the venerable London department store, the Italian eatery alto by San Carlo brings the glamour.

Oblix at the Shard: Oblix, a New York-style rotisserie, opened in 2013 on the 32nd floor of the Shard, Western Europe's tallest building.

Duck and Waffle: Duck and Waffle is located on the 40th floor of 110 Bishopsgate (Heron Tower). It's open round the clock so you can enjoy the views 24/7.

Galvin at Windows: Galvin at Windows is a Michelin-starred French restaurant on the 28th floor of the Hilton Park Lane Hotel. General manager Fred Sirieix is also a TV celebrity, as maître d' on the Channel 4 show "First Dates." The bar, 10 degrees, pictured, is named after the post-sunset haze.

OXO Tower Restaurant: One of London's older rooftop restaurants, OXO is at a much lower altitude than its City counterparts, but still offers stunning views of St Paul's Cathedral and the Thames.

Fenchurch Rooftop Restaurant: Head to the "Walkie Talkie" skyscraper to enjoy a landscaped indoor garden known as the Sky Garden, wide observation desks and state-of-the-art restaurants and bars.

Aqua Kyoto/Aqua Nueva: Somewhere between a trendy evening hotspot and a fine-dining restaurant, Regent Street's Aqua is as perfect for after-work summer cocktails as it is for a luxurious evening meal.

Coq d'Argent: Coq d'Argent promises classic French food in a contemporary rooftop setting. The rooftop comes complete with a lawn, hedges and spectacular views of London's eastern cluster of skyscrapers.

Radio Rooftop Bar: Located in the five-star ME Hotel and overlooking the Strand and London's theater district, at Radio visitors can peer at the hustle and bustle of the streets below or look out towards the river Thames.

The Rooftop at Trafalgar St James: Sip a cocktail with a view of Admiral Nelson in this central London roof spot, that's part of the Trafalgar Hotel.

The Rooftop at Boundary London: Head East to the Rooftop at Boundary for views of the City of London skyscrapers.

Frank's, Bold Tendencies: South of the river you'll find one of the city's best views at Frank's Cafe, a summer-only bar on top of a former parking garage.

Madison Terrace Bar & Lounge: In this City of London post-work hangout you'll find yourself almost nose-to-nose with the iconic St Paul's Cathedral.


