Modi held the bi-laterals soon after he arrived from his weekend trip to the Silicon Valley where he met several technology leaders, including Apple CEO Tim Cook and Google's newly-appointed Indian-origin CEO Sundar Pichai.
Modi's first engagement of the day soon after his arrival to the "city that never sleeps" was with Cameron.
The two leaders discussed bilateral and global issues such as terrorism, UN Security Council reforms and climate change.
UNSC reforms, terrorism, the threat posed by Islamic State and the upcoming Paris summit on climate change were among the issues discussed.
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Both Britain and France have supported India's candidature for a permanent seat at the UN Security Council.
During Modi's bilateral with Hollande, they had a surprise visitor in Bill Gates, who was not present at the meeting Modi had with technology leaders in San Jose over the weekend.
External Affairs Ministry spokesman Vikas Swarup said Gates dropped by to meet the Prime Minister.