Internal control

Section 404 of the Sarbanes-Oxley Act of 2002 requires GSK's Annual Report on 20-F filed with the Security and Exchange Commission to contain a report on internal controls.

This report must acknowledge that it is management's responsibility for establishing and maintaining adequate internal control over financial reporting and include an assessment of the effectiveness of the company's internal control over financial reporting. Management's evaluation is subject to audit by GSK's external auditors.