0521 GMT January 22, 2018
During almost an hour of talks with the British official on sunday, Rouhani expressed dissatisfaction over the benefits Iran is deriving from the 2015 nuclear deal.
Rouhani told Johnson that Iran expects other signatories to the deal, including Britain, to “demonstrate determination to bolster cooperation and relations” with Iran in the wake of the landmark agreement which is formally called the JCPOA.
Rouhani said, “We should show determination for taking advantage of the post-JCPOA atmosphere for comprehensive development in relations and cooperation in practice and see its effects," president.ir reported.
Referring to the necessity of deepening Iran-UK banking cooperation in line with the implementation of the nuclear deal, Rouhani said: "JCPOA's implementation and maintenance is important and we believe that everyone, and especially the Iranian nation, should be able to enjoy its benefits."
The president also stressed that the Islamic Republic is seeking sustainable peace and stability, end of war and bloodshed, and eradication of terrorism in the region.
"London's dialogue with Tehran could help bring about more stability to the region", he added.
"We are determined to cement Tehran-London relations in various sectors," the British foreign minister said in the meeting.
The JCPOA has created good opportunities for the development of relations between Iran and the United Kingdom, Johnson added.
"There are good business and economic opportunities in Iran, and we are interested in British companies' participation on projects in Iran," said the foreign minister of the United Kingdom, emphasizing that the JCPOA was a positive agreement to be continued and that the Iranian people could benefit from its economic advantages, president.ir reported.
US President Donald Trump has made his opposition to the deal, struck in 2015, very clear and has threatened to scrap it. But the UK continues to support it. In October when Trump threatened to tear the deal apart, the UK, France and Germany said it was "in our shared national security interest" that its arrangements continue.
Johnson also said: "The UK did not consider the decision of the US president to transfer the embassy to Jerusalem an appropriate action", adding that the Islamic Republic of Iran has taken positive steps in the fight against terrorism and the development of peace and stability in the region.
According to the Guardian, Johnson has had a "worthwhile visit" to Iran.
A British Foreign Office spokesman said both "spoke forthrightly" on several issues, including the case of jailed British-Iranian Nazanin Zaghari-Ratcliffe.
She has been held in Iran since April 2016 on charges of spying.
The spokesman said "progress in all areas" had been agreed.
The Foreign Office spokesman also said: "We leave with a sense that both sides want to keep up the momentum to resolve the difficult issues in the bilateral relationship and preserve the nuclear deal."
It was only the third visit to Iran by a British foreign minister in the past 14 years.
In a series of meetings over two days, Johnson took flak from other Iranian officials.
There was similar criticism from Parliament Speaker Ali Larijani, who met with Johnson on Saturday and said other European countries had put in "much more effort".
"You haven't even solved the banking problems of the Iranian embassy in London," Larijani said.