Gluten-Free, Dairy-free, Vegan, and Vegetarian are on the menu, but the same kitchen also prepares what you avoid, so cross-contamination is possible. Tell staff what you react to, and ask how your dish is prepared before you order.
Les Filles Lancaster Gate is a health-focused cafe serving all day brunch, coffee, sandwiches and smoothies. The site calls it gluten free and vegan friendly, and the menu marks a gluten free option for most toast dishes plus several GF and vegan plates. A second branch is on Moscow Road in Bayswater.