Whatever your opinion on the Brexit vote, objectively the Brexit and the fall of the pound is not good for Cambodian expats who get their income from the UK. This will also affect expats everywhere who are paid in pounds.
Whatever the eventual outcome, currency fluctuations are always more difficult for the lower income bracket. Expect more poor Brits on the streets of Cambodia.
However, if you are an expat who is paid in $US, then thanks to Brexit, you will have more pounds to the dollar when you return to the UK.
Reuters on the pound and euro :
http://www.reuters.com/article/us-globa ... SKCN0ZC17J