Speaking to workers at the Mumbai headquarters of the Anglo-Dutch Unilever group, David Cameron added:
Britain is one of the most open, easy-to-invest-in countries in the world. We are incredibly welcoming. I am very proud of the fact that it is an Indian company, Tata, that makes the Jaguars and Land Rovers that are taking the world by storm. They also roll most of our steel and own Tetley Tea - and you don't get any more British than Tetley Tea.
I am very proud of that. Britain is an open economy and we encourage that investment. I think, in return, we should be having a conversation about opening up the Indian economy, making it easier to do business here, allowing insurance and banking companies to do more foreign direct investment into the Indian economy.
More top news
Katrina Ruthven is planning an Australian-style summer Christmas for her eight-year-old son who is only expected to live until his twenties.
An investigation is underway after a woman was sexually assaulted and train station staff spat at by a boy thought to be about 11-years-old.
Former residents of the Chagos Islands have lost their latest legal challenge at the Supreme Court.