Wagamama Royal Festival Hall is an Asian fusion restaurant in London's Royal Festival Hall that serves ramen, gyoza, and donburi. The gyoza filling is finely ground and sticky in texture, and the beef donburi tastes like a soy-braised bibimbap and is worth eating. Food is cooked to order and comes out relatively quickly, and staff respond quickly and efficiently. The ramen broth is bland and the noodles' texture is not good.