The Sri Lankan High Commissioner to the United Kingdom is the Sri Lankan envoy to United Kingdom. Countries belonging to the Commonwealth of Nations typically exchange High Commissioners, rather than Ambassadors. Though there are a few technical differences (for instance, whereas Ambassadors present their diplomatic credentials to the host country's head of state, High Commissioners are accredited to the head of government), they are in practice one and the same office. The Sri Lankan High Commissioner to the United Kingdom is concurrently accredited as High Commissioner to the Republic of Ireland. The current High Commissioner is Dr. Chris Nonis.
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Sri Lankan High Commissioner to the United Kingdom Wikipedia(Text) CC BY-SA