The 13 most iconic pictures of the US and Britain's 'special relationship'

LONDON - Britain's Prime Minister Theresa May will become the first foreign leader of a country to meet newly installed US President Donald Trump on Friday.

May, who has only been prime minister since July last year, is taking the opportunity to renew the country's "special relationship" with the US - something that has been forged in politics since the 1980s.

"The UK is by instinct and history a great, global nation that recognises its responsibilities to the world," May will say in a speech later on Thursday.

"And as we end our membership of the European Union, we have the opportunity to reassert our belief in a confident, sovereign and global Britain, ready to build relationships with old friends and new allies alike. So as we rediscover our confidence together - as you renew your nation just as we renew ours - we have the opportunity, indeed the responsibility, to renew the special relationship for this new age."

Business Insider decided to take a look back at the 13 most iconic pictures that best summed up the UK and US's "special relationship" over the past 30 years: