Get a job.
A year long holiday is a luxury you probably cannot afford and something which is only a recent phenomenon closely associated with the credit bubble that started in the late 1990's.
Historically it was only those from seriously wealthy backgrounds who spent a year galavanting around the globe as a rite of passage. To spend 1 of the 40 working years when you must earn your fortune drunk in a bar in SE Asia is neither improving, wise, beneficial or useful.
If you're rich and the £80k + SSTR money means not much to you and your family then go ahead. Those Vietnamese bar owners need you.
WWW
ps There won't be any prospect of proper full time paid jobs for a couple of years so maybe book an open ticket.
pps Are you suggesting you have huge debt, you could go bankrupt and then go abroad backpacking for two years until your bankruptcy is over? Thats a much more logical plan.