Hugh Davies fondly remembers the time he introduced a British publisher to Chinese leader Deng Xiaoping in 1985, when Davies was commercial counselor at the British embassy in Beijing.

Deng asked the publisher, "When you go back, could you tell them that the Chinese would like to join the Eureka program?"

Founded in 1985, the program was a European platform for sharing jointly funded research and development projects. China did not end up joining Eureka, but Davies still likes to tell the story to demonstrate Deng's forward-looking attitude.

"It was extraordinary that the Chinese wanted to join. For me, that was a fine example of how China needs to move forward in working with other countries," said Davies, whose enthusiasm is tangible as he makes observations about China's 40 years of dramatic transformation.

He said he thinks the next four decades will be even more exciting.

Davies, who first visited China in 1966, has many insights into how the country has transformed from a planned economy to a market economy thanks to its reform and opening-up policy, which was initiated in 1978.

The former diplomat said the Chinese government's visionary approach to economic development, combined with the entrepreneurial spirit of the Chinese people, will continue to propel the nation forward.

"China has a huge population, it has a huge geographical spread, a massive industrial base, huge financial resources, and experiences in both participating in international organizations and also peacekeeping operations," Davies said. "In the next 40 years, China will undoubtedly become the most important country in the world."

Davies joined the United Kingdom's Foreign Office in 1965 as a university graduate. A year later, he was sent to Hong Kong to study Mandarin. Soon after, in 1968, he traveled to Beijing to work as second secretary to the British charge d'affaires. The UK and China had not formally established ambassadorial relations at the time, but would do so in 1972.

In 1971, Davies returned to the Foreign Office in London. He would go on to other overseas diplomatic postings but always kept a keen eye on China's development.

When he returned to Beijing, in 1984, as commercial counselor at the British embassy, the nation was undergoing a dramatic change. The planned economy had made way for the early stages of entrepreneurialism. Markets had popped up, and farmers were selling vegetables and eggs directly to consumers, a novelty at the time.

"That was the first time. It was a very important step, because a free market had not existed before," Davies said. "Individual Chinese were being encouraged to run their own businesses."

In addition to produce markets, Chinese were selling blue-and-white porcelain that had been passed down through the generations. Davies and his wife have fond memories of buying such items, which they still treasure.

"There was one particular market we used to go at the weekend," he said. "We observed Chinese people becoming entrepreneurial."

What Davies saw on the streets of Beijing was reflected in what was happening at work.

On the national scale, the Chinese government was following the pattern set by the Four Asian Tigers - importing light industrial machinery and promoting export-led growth as the first steps in a new industrial revolution. The Four Asian Tigers were the continent's first industrialized economies: Hong Kong, Singapore, South Korea and Taiwan.

Using that economic model, the Chinese mainland effectively became the world's factory, and during the next 40 years, its GDP grew by an average of 9.5 percent a year.

Within China's fast-industrializing landscape, the domestic market quickly opened up to foreign business.

Fascinated by his three years in China, at such a critical point in the country's history, Davies was inspired to publish the 2015 book So Peking Personal: 36 Months with Deng Xiaoping, a collection of letters he wrote to his family back home that detail his observations of China beginning the process of reform and opening-up. Although the letters were not originally intended for publication, Davies realized they "provide a rare and very vivid picture of life" in China at that time.

In 1998, he took early retirement from his diplomatic career, but continued to work with China, spending time as an adviser to British insurance companies Prudential and Old Mutual and helping them plan their strategies for entering China's life-insurance market.

If Prudential and Old Mutual found their early expansions into China an unknown journey, today's international insurance companies have a much more accessible route. They simply need to establish a presence on Lloyd's of London, the world's oldest insurance market, which established a platform in Shanghai in 2007. The platform already hosts 33 international syndicates, making it Lloyd's largest outside London. Their collective revenue has risen from a few million yuan in 2007 to 2.2 billion yuan ($330 million) last year.

In addition to his work in the insurance sector, Davies spent 12 months with MG Rover in 2002 and 2003, during the company's attempts to find a Chinese partner. In 2004 and 2005, he carried out research and analysis of China's energy procurement for Middle East Consultancy and the Japan External Trade Organization.

In addition to advising businesses, he was a board member of the China Britain Business Association between 1999 and 2016.

He said "mutual benefit" drives the growing collaboration between China and the UK. In addition to trade, the UK's advanced technology sector and the English language remain influential on China and its internationalization, he said.

Looking to the future, Davies said he would like China to open up further to foreign investment, saying it will help Beijing step into the role of responsible global leader.

"If China can continue to open, then the international community will feel that China is playing by the rules, and will see China as a good neighbor in the world," he said. "I'm not saying that other countries are doing that well themselves. But China, being such a huge country, has massive responsibilities."