Patara Knightsbridge is a Thai restaurant in London, United Kingdom, and the useful context is what kind of evening it seems built to deliver. The draw is aromatics, heat and balance; at a polished mid-to-high price point, it should be judged as a polished dinner worth planning ahead for. It is most compelling for diners seeking flavor, texture and a point of view rooted in cuisine rather than decor alone, especially if the night calls for something more considered than a safe default.