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Terms & conditions

Office 365 Double Data Offer for Business customers terms and conditions

  1. This offer is only available to new and existing O2 Business customers who purchase the Office 365 Small Business Premium package with the 1GB On & On tariff - this will become 2GB with 'Double Data'.  Subject to availability.
  2. O2 reserves the right to withdraw or amend this offer at any time on reasonable notice.
  3. For the avoidance of doubt, this offer is only available with the Office 365 Small Business Premium package with the 1GB On& On tariff. It is not available on any other O2 business tariffs but O2 reserves the right to add a 'Double Data' promotion to other tariffs with the Office 365 package. 
  4. The Office 365 Small Business Premium package with the 1GB On & On Tariff is only available on O2 Business Customer individual tariffs. Existing customers must upgrade and change to an eligible plan to take up this offer. In these circumstances any unused inclusive allowance will be lost.
  5. Additional data purchased outside the qualifying package (e.g. Bolt Ons or Out of Bundle data) is not included in the offer.
  6. O2 reserves the right to end this offer in future.  We will include an update at the top of these terms and conditions when we are bringing this offer to an end. Anyone ordering the Office 365 Small Business Premium package with the 1GB On & On tariff after the offer has ended will not be eligible for 'Double Data'.
  7. Eligible customers will automatically receive 'Double Data' for the length of their mobile contract, as long as they continue to subscribe to the Office 365 service and meet all the qualifying conditions they signed up with (i.e. until the Office 365 contract ends or you change or upgrade your mobile package  whichever occurs soonest). Customers who switch to an ineligible plan or who fail to comply with any of the terms of this promotion will lose 'Double Data'.
  8. Data allowances must be used within the month. Unused allowances cannot be carried over into subsequent months.
  9. Excessive Use policy applies. O2 reserves the right to monitor usage, to apply data charges and/or withdraw the double data offer from any individual SIM Card, or all SIM Cards, contracted to the Customer at any time in the case of overuse or abuse of the Office 365 Double Data offer. Any charges for overuse will be at standard data tariff rates Promotional data will be used before any Bolt On data.
  10. Customers who disconnect and reconnect (for whatever reason) are not eligible for this offer.
  11. No cash alternatives are available. Promotional allowances cannot be transferred.
  12. The Promoter: Telefónica UK Limited, 260 Bath Road, Slough, Berkshire, SL1 4DX.
  13. These terms are in addition to your Business Contract, which can be found at