While a United Kingdom exit from the European Union would almost certainly cause turmoil in Europe, its effects on Asian economies including China, the region's largest, may be much more benign.

That's according to a note by London-based Capital Economics, which said a Brexit would cause at most a GDP drop of 0.2 percent across Asia.

The research company based its finding on a worst-case scenario estimate by the National Institute of Economic and Social Research, a London-based think tank, which said Brexit would reduce British imports by 25 percent worldwide within two years.