The deals Mr Johnson announced will be across industries, from software engineering to healthcare, as well as a collaboration on satellite launches.

It is claimed they will be worth £1bn to the British economy, promising 11,000 jobs in the UK as a result.

Speaking to reporters on a visit to a JCB plant in Vadodara, owned by Tory Lord Bamford, the PM said it was “an absolutely amazing example of the synergy [and] the synthesis between UK technology and Indian technology”.

He added: “The opportunity for us to deepen our friendship [with India] and our ties is enormous.”

The prime minister will also use the visit to push for a post-Brexit free trade deal with India, with a fresh round of negotiations set to begin in the country next week. He said he hoped it would be signed “by the autumn”.

But difficult conversations on the invasion of Ukraine are also likely, given India’s strong ties with Russia.

The country has not criticised Russia directly since it invaded and did not join the condemnation during a United Nations vote on the issue.

The UK has been trying to persuade India to reduce its reliance on Russia, with Foreign Secretary Liz Truss travelling to the country last month for talks.

The PM told reporters he had already raised the issue of Ukraine with Prime Minister Modi, but he said the country had condemned the “atrocities” in Bucha.

He added: “As I think everybody understands, India and Russia have historically a very different relationship than perhaps Russia and the UK have had over the last couple of decades, we have to reflect that reality.

“But clearly I will be talking about it to Narendra Modi.”