Drizzle and chilly winds greeted Cameron and his large entourage of ministers, business honchos, academics and sportspersons Wednesday morning in the IT hub.
Cameron, who arrived here early Wednesday, will visit India's IT bellwether Infosys Technologies Ltd and deliver a lecture to its employees.
He will later visit HAL, the defence behemoth, which is manufacturing advanced jet trainers (AJTs) Hawk under licence from British defence group BAE Systems.
Cameron will fly to Delhi Wednesday afternoon from HAL airport.
Secretary of State for Foreign and Commonwealth Affairs William Hague, Chancellor of the Exchequer George Osborne, Secretary of State for Business, Innovation and Skills Vincent Cable, Secretary of State for Culture, Media and Sport Jeremy Hunt and National Security Adviser Peter Ricketts are part of Cameron's delegation.
CEOs of leading business houses, vice chancellors of reputed universities and sports personalities are also accompanying Cameron.
