What’s more, there’ll be some masterclasses with practical advice for recreating sustainable cocktails at home. So far there’s two dates confirmed, the 10 and 20 of November, which will teach you to make the ultimate (sustainable) Bloody Mary or forage for your own cocktail fodder from urban green spaces.

But the biggest focus of this event will be the promotion of the benefits of having a reusable coffee cup. According to the Environmental Audit Committee, we use 2.5 billion disposable coffee cups every year. So to encourage the reduction of single-use cups, staff will be offering a free Espresso Martini when purchasing a KeepCup at a reduced cost of £10. Word on the street is there’s only 500 going, so make sure you get in there quick.

The event will run from the 30 October to 24 November and the address is 5 Brock Street, London, NW1 3FG. When you get there, tell them you’re looking for the Conscious bar.

If you can’t wait until then to bag yourself a KeepCup, here’s a few stylish ones to get you started.

Help the environment one Espresso Martini at a time with this London pop-up