David Cameron is due to hold talks with his Indian counterpart Manmohan Singh on the final day of his visit to the country. The talks in Delhi are expected to focus on trade and security.
Ahead of the meeting, Cameron defended his claim that Pakistan promoted the "export of terror" around the world. Despite anger in Islamabad over his remarks, Cameron said: "I don't think the British taxpayer wants me to go around the world saying what people want to hear."
He added: "I think what is absolutely clear is, it's not acceptable for, within Pakistan, there to be terrorist groups threatening Pakistan itself but also other countries, including British people, whether in Afghanistan or back at home.
"To be fair to the Pakistan government they have taken action against these groups. We need them to do more and we will support and help them as they do more. But I think it's important, as I say, to speak frankly about these things to countries that are your friends."
Pakistan's president Asif Ali Zardari will be visiting Cameron at his country retreat at Chequers next week.
Asked whether he regretted damaging relations with Pakistan, Cameron said: "I don't accept that they have been damaged. We have very good relations with Pakistan - I have a meeting with President (Asif Ali) Zardari next week in the UK and I look forward to discussing these and other issues."
