'History is watching': JK Rowling warns Theresa May as she 'heaps praise' on Donald Trump

JK Rowling has criticised Theresa May as reports suggest the British prime minister is set to praise Donald Trump during her visit to him today. 

According to The Telegraph, May will tell congressional Republicans in Philadelphia that the UK and the USA can "renew the special relationship" as the two countries "lead together again" amid political upheaval. 

Responding to the news, Rowling tweeted a link to an article alongside the caption: "History's watching, Theresa."

The "Harry Potter" author has long been a vocal opponent of Trump both throughout the campaign and into his presidency. 

In December 2015, she said Voldemort was "nowhere near as bad" as the then-presidential candidate.

Following his win in November, Rowling tweeted her nine million followers saying "We stand together. We stick up for the vulnerable. We challenge bigots. We don't let hate speech become normalised. We hold the line."

Theresa May will be the first foreign leader to visit President Trump since his inauguration on January 20. The pair will discuss free trade and the importance of the NATO military alliance which Trump has repeatedly criticised and branded "obsolete."