O2

O2, a division of Telefónica UK, is a major British telecommunications company offering mobile, broadband, and IoT connectivity solutions. Headquartered in Slough, O2 serves millions of customers across the United Kingdom with consumer, business, and wholesale services. O2’s network covers over 99% of the UK population and employs advanced 5G infrastructure and intelligent network management. The company emphasizes best-in-class data privacy (GDPR), net zero pathways, and robust ESG frameworks for vendors and partners. Recent years have seen O2 launch digital-first tools, expand financial and health solutions, and deepen social and environmental commitments as a core pillar of corporate strategy.