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The signs have been slowly forming in recent months as Prime Minister Theresa May went over to Washington in a meet and greet in person with the then newly installed Republican President Donald Trump - notably the first official visit - and both making positive signs that a trade deal could be done to the benefit of both. And now experts have warned Brexit could herald a new chapter in the so-called special relationship with Britain and the US uniting around a shared vision. Henrik Choy, an expert on US foreign policy, writing for The National Interest, said: “Faced with polarisation in both their parties and respective countries, Trump and May face uphill battles to achieve their political agendas. “Appealing to the more nationalist and populist elements of society, Trump and May have entered uncharted territory by promising to tackle issues in ways that differ from their predecessors.

Getty Theresa May and Donald Trump are building a new special relationship

“For decades, Britain and the United States have been bound together in a unique relationship through their common vision of a world they wish to create, the external and internal threats they share, and the personal relationships their leaders have developed. “Today, the changing mood in both Washington and London is forging an unusual new chapter in this long standing “special relationship.” In the wake of Mrs May's trip to Washington, Mr Trump talked of a “big and exciting” trade deal with Britain post-Brexit with preliminary talks involving International Trade Secretary Liam Fox taking place. They proved to be positive enough pushing Mr Trump to the official White House Twitter account on July 25 to proclaim the talks would make the famed special relationship “even better”. He then took to his own account to slam the EU for what he saw as its “protectionist” trade policies.

Theresa May meets Donald Trump at G20 Summit Sat, July 8, 2017 Theresa May met Donald Trump for a bi-lateral meeting on the sidelines of the G20 conference Play slideshow PA 1 of 10 Donald Trump and Theresa May shake hands during their bi-lateral meeting at the G20 summit

Mr Trump has also claimed US farmers have difficulty selling their products to the continent due to EU regulations, while no such barriers to European products existed Stateside. A trade deal with the US, not only beneficial in its own right, is also very likely to be the spark for other trade deals with other nations, such as Australia. Julie Bishop, Australia's foreign minister, said after talks with Foreign Secretary Boris Johnson that her country was hoping to strike a “high-quality, comprehensive free trade agreement” with the UK. Along with the visit, Mrs May has largely stood by the Washington administration and has denied requests from the left to cancel his planned state visit to the UK. The Prime Minister also failed to condemn Mr Trump when he issued his travel ban across seven, mostly Muslim countries.

London and Washington also stood together after the US broke from the Paris climate change agreement. While Germany, France and Italy issued a joint condemnation of the move by Mr Trump, Mrs May refused to sign. The two have also seen eye-to-eye on the threat of global terrorism, with both pledging to continue the War on Terror in response to the recent terror attacks in London. While Mr Trump initially appeared to be wavering on his commitment to military involvement through Nato as he saw most European countries not pulling their weight when it came to financial commitments to the alliance. Later pronouncements though saw him softening his stance and indicate that he would be a key player on the world stage.

Getty Theresa May and Donald Trump meet at the G20 summit

The ever-growing special relationship though extends further than simply matters of state or economic or environmental policy. During the G20 meeting in Hamburg Mr Trump came under fire for putting his daughter Ivanka into the diplomatic limelight when she took the US seat at the dinner for the leaders, sitting between Mrs May and the Chinese President Xi. Then there is the simple aspect that Mr Trump is very fond of Britain. During one press conference then communications chief Anthony Scaramucci said: “He [Mr Trump] loves the United Kingdom.” He said: “Think about the special relationship we've had since the inception of this great nation. You know what this nation is? It's a disruptive start-up, it was a group of rich guys who got together and said, 'You know what, we are going to break away from the other countries and start our own country'. “This is a disruptive start-up. You know what the president is doing? He is bringing it back to its roots of disruption.”

Getty Theresa May and Donald Trump during her visit to Washington