Go for it! the world is your oyster. But only go when and where you want to and not because you feel you "should". You seem to have done a really good basic tour since qualifying and the chance to work in other countries and further your physio and worldly knowledge is there.
Do some basic checking on countries that may interest you, acceptance of UK qualifications, visa, workpermit etc. Even if it's not a too high powered job abroard the learning of another culture experience is valuble. Don't take for granted that values, ideas on physio or anything are the same in another country. All new jobs give you something.......worst case of course could be that it was a bad choice but you are presumably young and lots of time to build on professional knowledge anyway.
OK, I am biased as my aim after qualifying years ago was to go, somewhere, anywhere, elsewhere, travel, work, see it. And I'm still out "there".
Other physios from my year never went out of UK or even the same area as they qualified in. They are happy too, and have progressed in their careers, so travel isn't a must, although I would say that the chance to do so, if possible, should be taken.
Have fun whatever! regards. Ancient Travel-Physio