The following stores are vegan or plant-based

​GreenBay Supermarket
228 North End Road, West Kensington, London W14 9NU (nearest tube: West Kensington / West Brompton). Two doors down from 222 Veggie Vegan restaurant
100% vegan grocery store /off-licence 
​www.greenbaysupermarket.co.uk/

Organic For The People
29-30 High Street, Ealing, W5 5DB
100% Vegan & Organic . Visit their Facebook Page ​

LiveWell - Plant-based grocers
70 White Lion St, Islington, London N1 9PP
also online deliveries https://www.livewelluk.co.uk/