Cointreau partners with SunSeekr

There’s a particular London optimism that arrives with a September afternoon, and Cointreau is betting on exactly that feeling. The maison is partnering with SunSeekr, the sunshine-mapping app that went viral this summer, to launch a first-of-its-kind live guide to London’s sunniest terraces for a Spicy Margarita. 

 
From 3 to 30 September, the interactive map follows the sun across the capital and updates throughout the day. An east-facing terrace in the morning, a rooftop at full noon, a riverside bench glowing at golden hour: wherever the warmth lands, the next margarita is never far. 
It all shines a light on Cointreau Spicy, the maison’s first chilli-infused expression, which arrived in the UK this July. And it lands at the right moment: the Margarita continues to dominate cocktail culture, while its spicy cousin is having a breakout year. 

 
The map also points the way to selected Sainsbury’s stores, for anyone who’d rather bring the sunshine home. A bottle of Cointreau Spicy, a few limes, and the rest takes care of itself.

Founded in London in 2025 by architect and entrepreneur Mo Dawod, SunSeekr uses live solar modelling to map exactly where sunlight and shade fall throughout the day. The app went viral within weeks, reaching No.1 in the UK App Store’s Lifestyle category and earning coverage in The Times, Time Out and on the BBC. 

350,000+ users across the UK, Europe and the US 
No.1 UK App Store, Lifestyle category 
2026 launched SunPaths, its sunniest-route feature