Live: PM Modi addresses business leaders in London, says India is one of the most open countries for foreign investments

Modi is expected to hold a series of meetings with industry leaders, address a joint session of the British Parliament, a first for an Indian Prime Minister, and will also have lunch with the Queen.

Modi will start with talks with his British counterpart David Cameron who has described the trip as "extraordinary". "I am excited by this visit. I am excited by what Prime Minister Modi is doing in India and I'm excited about the partnership that we can build together," Cameron said.

Describing Modi's visit as "extraordinary", Cameron said it was not simply about celebrating the economic ties but "actually building a thoroughly modern partnership between our two great countries".

Modi arrives on Thursday afternoon and after talks with Cameron at 10 Downing Street he will address a joint press conference at the Foreign and Commonwealth Office (FCO). A brief stop to pay tributes at the Mahatma Gandhi statue in Parliament Square will be followed by speeches at the Houses of Parliament and then at the Guildhall in the financial hub of London.

His talks with Cameron will carry on at the British Prime Minister's country residence of Chequers in Buckinghamshire, where he is being hosted overnight.

On Friday, Modi will return to London for a CEOs round-table which is likely to include representatives from major British companies like Rolls-Royce and Vodafone.

The pomp and ceremony attached to the visit is expected to include a special tricolour flypast by the Red Arrows Royal Air Force (RAF) Aerobatic Team over Buckingham Palace before the Prime Minister sits down for lunch with Queen Elizabeth II on Friday afternoon before making his way to Wembley Stadium in north London for the mega Diaspora reception.

He leaves for Ankara to attend the G20 summit on Saturday after inaugurating a new statue of 12th century philosopher Basaveshwara as well as a new Ambedkar memorial in London.

A visit to the Tata Motors' owned Jaguar Land Rover (JLR) factory in Solihull, in the West Midlands region of England, will be the last item on his UK agenda.