If it's Android you can only change your country once a year
<--so caution is called for.
Best to wait until you get here if husband can't do it (it only takes 17 days to switch)
If you want the account in your name ask hubby to register with his email and your name and simply change the email address on the ac when you get here. You can run the app on any suitable device concurrently so once you download the app on your device when in the UK you can control the account.(as long as you have access on that device to the email address used when a/c registered in order to log in -email could be forwarded)
not sure if I said that clearly..post back if any questions