You can send us your PO number using one of these methods:

• Email us at ukibillingsupport@thomsonreuters.com. In the subject line, include your account number and the words 'Purchase Order.' You can include the PO number in your email.
• Complete this form. 
  • Include 'purchase order' in the subject.
  • Nature of query - Billing
  • Query type - Billing enquiry