在英國、澳洲找暑期工

I think one months is hard for you to get a job, unless it is waiter or cleaner, or illegal worker!

Both of UK and AU need a working Visa to working legally, But i know that Au have a working holiday Visa (1 years) for the young adult!

check this out :
http://www.immi.gov.au/visitors/working-holiday/417/