There are now so many vegan places to eat in London and I must confess I haven't been to all of them. 
Below are listed ones that I've been to and can recommend, or ones others have recommended to me.

KEY: The places in bold are vegan

The Best Vegan Pizza ​

​Purezza - See article for more details and listings of other vegan pizza restaurants

The Best Vegan Pasta 

Pastan - v​egan artisan pasta restaurant. Located nr The Barbican

The Best Vegan Fish & Chips 

 - Unity Diner -  See article for more details and other recommendations. Located Spitalfields.

​The Best Vegan Chinese 

• ​Loving Hut Archway - Archway
• Zen Buddha  - Edgware
• Tofu Vegan - Branches in Islington, Spitalfields and Golders Green 
  
  

The Best Japanese Vegan

​Itadaki Zen - London's only Japanese vegan restaurant

The Best for Sushi

123V offer an assortment of vegan sushi. Located downstairs in Fenwicks, Bond Street/Brook Street

The Best Indian Vegetarian

• ​Sagar South Indian Vegetarian - has separate vegan menu. Central London, West London and  and Harrow locations
• Rani (in Finchley) - Vegetarian Gujurati, Finchley Central. ​

The Best Mexican Vegan

Club Mexicana - London's only vegan Mexican restaurant chain. Located in the West End as well as Spitalfields

The Best Thai Vegan

• Mali Thai Vegan - Earls Court
• ​Plants of Roselyn - London Bridge

The Best Vietnamese Vegan

Sen Viet Vegan - London's only Vietnamese vegan restaurant. Hoxton

The Best For Caribbean Food

Jam Delish - New vegan Caribbean restaurant located close by to Angel, Islington. Very nice food. Cocktails also available.

The Best Vegan Korean food

Mukbap small cafe serving vegan Korean food

The Best Place for That Special Occasion

• ​​Farmacy - Healthy food, Bayswater location
• Gauthier Soho - Has had excellent reviews re their vegan tasting menu.​
• Studio Gauthier Sister restaurant to Gauthier Soho, but less formal.
• Mallow - sister restaurant to Mildreds 

The Best for a Healthy Meal

​

• Vantra - Oil free, gluten free, sugar-free, vegan. Central London
• Farmacy - Healthy food​​​

The Best Places Where You Won't Be Rushed

Vantra ​

​The Best Full English Breakfast

• Gallery Cafe - For breakfast and brunch. Bethnal Green 
• 123V - Located downstairs in Fenwicks, Bond Street/Brook Street
• Black Cat Cafe located in Hackney

The Best Place to Get a Burger

There are lots of places to get vegan burgers in London. Here are a few: 

• ​​Temple of Hackney or Temple of Camden 
• Flipside - 
• The Vurger Co - Shoreditch
• VBurger - Camden Market
• Neat Burger - Camden and Soho and various other locations
• Halo Burger - Shoreditch and Brixton​

​The Best Places to Get Vegan Fried Chicken and Vegan Kebab

• ​Temple of Hackney or Temple of Camden - for fried 'chicken'
• What The Pitta - for kebabs

The Best Places for Cheap Food (under £10)

• ​Black Cat Ethical vegan cafe, Hackney
• What The Pitta Camden Town
• Tai Buffet Shepherds Bush
• ​Camden Market: (VBurger, Magic Falafel)​

The Best Places for Vegan Cake

• ​​Vida Bakery - Gluten-free vegan cakery located on Brick Lane
• Nama Café and Cake House in South London
• Rubys of London vegan bakery located in Greenwich​
  ​​

The Best Place for a Vegan Sunday Roast Dinner​

• Cafe Van Gogh
• ​Karamel, N22
• ​LD's Kitchen at The Black Heart Pub

The Best Vegan Doughnuts

• ​Crosstown Vegan 
• ​DoughnutTime - various central London locations​

The Best Vegan Bar / Pub

​​The Spread Eagle - London's first 100% vegan pub / restaurant
Also: The Railway Tavern, :Tulse Hill
​

The Best Place to Take A Meat Eater

• ​Mildreds various locations​

​The Best Place For Gluten Free

• ​Plant Club -  vegan gluten-free Italian restaurant and pizzeria
• ​​Vantra  For food in Central London

​And for cakes/pastries

• ​​​Cookies and Scream 
• Vida bakery
• ​Cream Dream cafe

Other Recommended Vegan Cafes/Restaurants

• ​Ahimsa - located in Pinner in North West London. Small but excellent vegan cafe
• 222 Vegan Cuisine
• Mildreds - various locations including Covent Garden, Kings Cross, Dalston. Nice food and décor. Sister restaurant to Mallow. 

Non-Veggie places worth mentioning
​​

• ​​CafedeNata​ - vegan Portuguese custard tarts
• ​​Amorino - Ice cream & sorbets . Cafe chain