With his heritage and enormous prolonged household within the nation, Prime Minister Rishi Sunak will obtain a hotter welcome than a lot of the different world leaders arriving in India this weekend for the G20 summit.

Unfortunately although, a free trade agreement between the UK and India shouldn't be assured any time quickly.

Last yr, India leapfrogged the UK to develop into the world's fifth-largest economic system - and in April, overtook China to become the world's most populous country.

Its rising prosperity makes it a rustic that the entire world desires to do enterprise with. Before lengthy, it's more likely to be the third largest economic system globally after the US and China.

A free commerce settlement with India was, particularly, held out as one of many nice potential prizes of Brexit. Boris Johnson described a free commerce settlement with India, if achieved, as "the biggest of them all".

India is already the Sixteenth-biggest vacation spot for British items exports - forward of South Korea, Turkey, Sweden, Australia and Saudi Arabia and on a par with Canada - and that's solely anticipated to develop.

With the UK a predominantly services-oriented economic system, although, it's companies that guarantees the best alternative.

The worth of the UK's companies exports to India are already near the worth of its companies exports to Japan, Italy and Hong Kong.

In all, Mr Sunak's goal is to double commerce between the UK and India - at present value some £36bn - by 2030.

At current, although, a deal stays elusive.

This is partly as a result of Mr Sunak is assumed to need a extra complete and far-reaching settlement than has to this point been on supply.

Both he and Kemi Badenoch, the commerce secretary, are thought to imagine {that a} shallow deal - of the type that might have been achieved by now - would make it tougher to give you a deeper deal in future.

But additionally it is as a result of plenty of sticking factors stay. The most blatant is India's want for the UK to make extra visas out there for its college students and staff of Indian firms, notably its software program companies, that are amongst its largest exporters.

This provides a layer of complexity as a result of one of many largest beneficiaries of such an settlement might be Infosys, one in all India's largest software program and outsourcing firms, which was founded by Mr Sunak's father-in-law and in which his wife retains a significant shareholding.

Yet visas seems to be a pink line for Mr Sunak, because the PM's spokesperson made clear this week: "The prime minister believes that the current levels of migration are too high.

"To be crystal clear, there aren't any plans to alter our immigration coverage to realize this free commerce settlement and that features student visas."

For the UK, the key priority is for India to reduce its tariffs, which are seen as among the world's most protectionist. Just 3% of UK exports to India are tariff-free - while by contrast, about 60% of Indian exports to the UK incur no tariffs.

Some of the UK's biggest exports are heavily taxed, most famously Scotch whisky, which attracts a 150% tariff.

Another stumbling block, as negotiations between the two countries enter a 13th round, is India's approach to intellectual property.

One of India's biggest exports is generic drugs - sometimes described as "copycat" medicine - cut-price variations of medicines that had been as soon as protected by patent, however that are not.

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The UK, with its wealthy historical past of scientific innovation and which boasts one of many world's most dynamic prescribed drugs sectors, desires longer patent safety for medicine than India supplies underneath its present commerce agreements.

India argues this might make medicines unaffordable to a giant chunk of its inhabitants.

Mr Sunak can console himself with the thought that Britain shouldn't be the one one struggling to conclude a free commerce settlement with India.

The EU is known to be deeply pissed off on the size of time it's taking to barter with a notoriously difficult associate.

But the hazard is that, with elections due in each India and the UK in the course of the subsequent yr, a free commerce settlement might but be kicked into the lengthy grass.