Closing my contract after moving abroad

[mulimuli]

I've moved from the UK to Finland and therefore need to close down my O2 monthly SIM. How can I do this as I dont need any STAC codes to transfer any details, just need the contract terminated.

[Bambino]

@mulimuli See this guide: Cancelling your contract - An updated guide - O2 Community

If there are any months left on your contract you will have to pay the remainder. If you need to speak to customer service call +44786 0980 202 for free from your phone, or download Skype Guide: A Guide to Skype to call +44800 902 0217 or +44800 032 1402 
When it comes to the reason you are calling, stay silent for 15 seconds and you will be taken to the keypad options.
Press 2 for Everything Else
Press 5 for More Options
Press 7 for Anything Else which will put you though to someone.
Say 'Upgrade', 'Lost/Stolen', or 'Fraud' if the suggestion above doesn't get you through.
Best time to call is 8 am.
You can also reach O2 via social media:
Facebook (https://o2uk.co/O2CFB), Twitter (https://o2uk.co/O2CTW), or Instagram (https://o2uk.co/O2CIG)