Loose-leaf tea. Marmalade in ribbon-tied jars. Expertly woven picnic hampers. Piccadilly department store Fortnum & Mason has luxury British goods on lock - and now it's coming for London's cocktail scene with the relaunch of its swanky AF bar.

Set on the Fortnum's revamped third floor, 3'6 has been redesigned by big-time French architect Arthur Mamou-Mani with a focus on art, tech and sustainability. The bar itself doubles as an art installation, with the architect's signature "wooden waves" spilling onto the ceiling, and loads of the design elements have been 3D printed from renewable and compostable materials (even the bar stools were crafted from a type of bioplastic made of fermented sugar - wicked!).

Take a seat and soak in some culture, 'cos 3'6 serves as an exhibition space for some renowned artists and photographers. Then get stuck into the cocktails. Behind the bar, leading man Mustafa Tumburi shakes up a selection of technique-driven drinks with a focus on local ingredients. Feelin' creative? He's also dreamed up a choose-your-own-adventure kinda process called Made to Measure, where you choose a base spirit, an essence, seasonal ingredients and top notes to design the drink of your dreams. All that, and you can stock up on posh biscuits on your way out. Ideal, really.