I've been a couple of times in the past year - food, price, waiting time and service all reasonable.
As the name suggests the food and set up is cafe style. Everything's vegetarian and mostly vegan. They've a mixture of communal and individual tables, with a small outside space. On our most recent visit we had a couple of vegan pizzas, which including drinks came to about £20:

Liberal serving of Cheezley and sensible amount of toppings. Fresh dough and crispy base - not stunning but above average.I'll both return and happily recommend it - whether you're in the area already or fancy a change from the usual Z1 dross.
Ruby's is a cake stall on Greenwich market. Why the fuss? Because the cake is good - really good! Everything's vegan and with plenty of gluten free options too.
Which was amongst the best vegan cake I've ever had - in London and beyond. Visually appealing, perfect texture, good flavour and not too sweet (the frosting being more creamy than like eating a bag of sugar). 
