We visited Nine Elephants in Docklands for a Thai meal. It is not a fully vegetarian place, but there were a few vegetarian options on the menu.
We tried the Nine Elephants Fried Rice and Garlic Fried Rice with Tofu. Both were simple, filling lunch-style dishes, and it was useful that the menu had veg + tofu options for some rice, curry and noodle dishes.
One thing I liked was that the chef can customise the order. You can ask for things like less chilli or less oil, which helps when eating with family or when you want something milder.
Vegetarian notes
This is more of a practical Docklands lunch option than a dedicated vegetarian restaurant. I would still check with the staff before ordering, especially if you are avoiding fish sauce, egg, or other non-vegetarian sauces in Thai food.
Menu notes
Would I visit again?
Maybe — mainly if I am in Docklands and want a quick Thai lunch with a few veg options.