Right...
Your licence is as easy to transfer as your experience and ability allows.
Note, on completion of this course, you'll hold a CPL + IR + ATPL subjects.
Therefore, if you go to Australia (for example), you'll still have to do the Australian ATPL subjects which are no pushover.
As a UK citizen. you're entitled to Europe. Do you have any ancestral rights any where? For sure there are some places in the world that don't require a huge hurdle for visas but you'll probably need some experience to attract their interest. (Eg Emirates and Cathay).
Australia and New Zealand uses the points system for immigration/visas. You're definitely young enough and can speak English, that's a good thing. But not sure what else you can bring to the mix WRT the points system.
Will you get a job at the end? Who knows? Who knows what the market will be by the time you complete the course? However, it is not common for an untagged CPL graduate to go straight to a jet (at the moment).
Good luck