According to the documents at National Archives, senior members of the Margaret Thatcher government feared a change in India's stance over a deal struck by the former Indian Prime Minister.
"The Prime Minister may wish to be aware that Westlands had negotiated an order of 27 Westland 30 helicopters for use in oil rig support with one of the Indian Government agencies.
"The order had Mrs Gandhi's backing and unless this backing continues at a high level it is possible that the French will intervene and the order be lost," warned Peter Warry, one of Thatcher's special advisers, in a letter issued on November 1, 1984 -- a day after Gandhi's assassination.
The then British High Commissioner to India, Robert Wade-Grey, issued a warning that British Sikh celebrations in the UK following Gandhi's death could have a direct impact on the deal.
"There is even talk of a trade boycott, including cancellation of existing defence contracts," he wrote to the then foreign secretary, Geoffrey Howe, who was sufficiently rattled.
These initial exchanges led to more detailed briefs being prepared on Rajiv Gandhi, who, it was clear, would be the one to ensure the deal goes through as Acting Prime Minister.
