Finding Temporary Work Teaching English in Cambodia

Hello,

I'm not sure if this is the right place to post this, but I haven't used this site before and I am looking for some information.

If I were to turn up to Cambodia and wanted to stay for four months, how easy would it be to find some teaching work that will provide me enough money to live on for four months and pay for my flights from London to Cambodia and back again?

I am British, I am white, mid-30s, and I am tall and handsome with a good clear accent.  I also have teaching experience.

Unfortunately, I do not have a degree.

Is there any chance I can turn up, find an agency, and get work for four months teaching English in some part of Cambodia?

I want to do so legally, if possible.

many thanks for taking a look.

If I have placed this in the wrong place, please let me know.