The best restaurants serving British food in Grove Kingston upon Thames London

Went here for a coffee. Stood at till to be served. Two staff at till. One showing the other something on till. Stood for ages to be served not one of them said sorry to keep you waiting or even noted that I was there. Then someone came behind me in queue someone from the back appeared and served him.i am still waiting. I left without being served. Staff very rude. Won't go back here.