I have been to veg out several times, and I have never been blown away.
Florine does an amazing job when it comes to selection, quality, and availability. I am always disappointed by the servers, and find that they are either uninterested or uneducated on what is being served (don't know what is in some of the dishes or even joking about not knowing the special). The food is organic, local, and vegan- something rare for London. Definitely worth visiting, but sadly not organized enough to be worth frequent trips, at least for me.
Cons: a little pricey for small portions, immature and uneducated servers