President Donald Trump has hinted at a quick trade deal between the US and the UK in a meeting with British Prime Minister Theresa May on the sidelines of the G20 summit in Hamburg on Saturday. 

"We're working on a trade deal which will be a very, very big deal, a very powerful deal, great for both countries," Trump told reporters, "I think we'll have that done very, very quickly."

Trump also said that he will go to London when asked if the planned state visit would go ahead.

US President Donald Trump (center R) and British Prime Minister Theresa May at their meeting, with US Secretary of State Rex Tillerson (4th R) also present, during the G20 Summit in Hamburg, Germany, July 8, 2017. /VCG Photo

May has been derided for seeking to curry favor with Trump and has come under fire for inviting him for a state visit, which hasn't been mentioned in Queen Elizabeth II's annual speech to the parliament in June. It is customary for the monarch to list upcoming state visits.

British Prime Minister Theresa May meets US President Donald Trump during the G20 summit on July 8, 2017 in Hamburg, Germany. /VCG Photo‍

Britain cannot seal a separate trade deal with the US until it has left the European Union in 2019.

(With inputs from AFP)