- 14 updates
The Queen and the Prime Minister of India have exchanged gifts after the pair had lunch at Buckingham Palace.
Narendra Modi was presented with a silver dish and signed photographs of the Queen and the Duke of Edinburgh.
Mr Modi gave the Queen photographs of her visit to India in 1961 and a gift box including Darjeeling tea, organic honey and silk Tanchoi scarves.
Mr Modi was also shown a collection of items from the Palace's stores including a shawl given to the Queen by Gandhi in 1947 as a wedding present.
It comes as Kensington Palace announced the Duke and Duchess of Cambridge will go on a tour of India next Spring. It will be the couple's first visit to the country.
Organisers are making last-minute preparations to Wembley Stadium ahead of Indian Prime Minister Narendra Modi's address to tens of thousands of supporters later today.
India's Prime Minister Narendra Modi arrived for a three-day trip to the UK today, with one of the first items on his agenda a meeting with David Cameron to announce £9 billion worth of new deals between the two counties.
The deal comes as countries compete to trade on the success of an Indian economy which is "booming as never before" and could see the nation soon become "the world's second largest".
ITV News correspondent Emma Murphy reports:
India's Prime Minister Narendra Modi has welcomed a "growing and vibrant partnership" with the UK today as it was announced that the two countries would be entering into £9 billion worth of deals together.
Not everyone was as optimistic about the deals though as protesters descended on Downing Street to accuse Modi of "stoking the fires of sectarianism" in his previous role as a governor in his country.
ITV News' International Affairs Editor Rageh Omaar reports:
India's Prime Minister Narendra Modi has given a speech in the Houses of Parliament on the first day of his three-day trip to the UK.
Speaking after the announcement of £9bn in new ventures between the UK and India, Mr Modi said "it is a huge moment for our two great nations".
"We must seize our opportunities, remove obstacles to cooperation, instill full confidence in our relations and remain sensitive to each others interests."
"We will transform our strategy partnership and we will make this relationship count as one of the leading global partnerships", he added.
David Cameron has announced new ventures worth more than £9 billion between India and the UK.
Speaking at a joint press conference with India's Prime Minister Narendra Modi, Mr Cameron said it was "a real opportunity to open a new chapter in the relationship between our two countries".
He also said the UK firmly supports the notion of a permanent seat for India on UN security council.
Mr Modi, who is the first Indian Prime Minister to visit Britain in almost a decade, also confirmed he has signed civil nuclear agreement with Britain.
His three-day trip will include a meeting with the Queen and a rally at Wembley Stadium on Friday, where 60,000 mostly British-Indian ticket-holders will be in attendance.
Hundreds of protesters gathered outside Downing Street ahead of Narendra Modi's arrival on Thursday.
Messages on the banners of those protesting against his presence included "Modi not welcome", "Stop religious persecution", and "Remove illegal blockade in Nepal".
More than 200 writers, including Ian McEwan, Salman Rushdie and Val McDermid, have written an open letter to David Cameron to raise concerns about freedom of expression in India during his talks with Mr Modi.
A number of pro-Modi demonstrators also held banners and chanted outside Downing Streeet ahead of the visit.
David Cameron has welcomed Prime Minister Narendra Modi to Downing Street as the Indian leader begins a three-day visit to the UK.
The two leaders shook hands on the doorstep of Number 10 before heading inside for talks.
Latest ITV News reports
Around 60,000 people packed into Wembley Stadium for a rally led by Indian Prime Minister Narendra Modi.
Despite the depth of shared history between the two countries, Britain does more trade with Ireland than India.