First thing is to do some research on these forums as I think yo'll find your answer.
For free you don't just get an ATPL you have to have at least 1500+ hours experience. Most UK students will by one way or another get a CPL/IR with ATPL theory knowledge - often referred as a Frozen ATPL.
Flying overseas you shall need to think about work permits etc. Have you been watching C4 "Worst place to be a pilot"?
Over to you to get searching.