I've just got a new phone and I can't figure out how to re load my game data from my previous phone. Any help would be much appreciated
Did you set mail and password for your account?
If so all you have to do is load OSM from your new phone, when it loads up don't pick a team else you'll be creating a new account. Click on I already have an account and this will take you to the login page where you can enter your manager name and password to continue with your account.
No response from OP.