The Good Life Eatery
The Good Life Eatery is most definitely one of the heathiest cafes in london. Their menu is suitable for vegans, vegetarians, sugar-free, gluten-free, paleo, omnivore, everyone.
They do the best smoothies around, their juices are expensive but big and cold-pressed. Their portions are huge, big well balanced salads.
They've opened a second cafe in Marylebone and hopefully they will be opening more, hopefully in bigger locations so the queuing is minimised.