Theresa May has been holding talks with Francois Hollande on Britain's plans to quit the European Union when they meet in Paris on Thursday.
She later told reporters she won't be rushed into triggering the start of a Brexit.
The talks come a day after Mrs May met German counterpart Angela Merkel, shortly after making her debut at Prime Minister's Questions.
Video report by ITV News Europe Editor James Mates.
Francois Hollande today warned Theresa May that she cannot pick and choose among EU rules as the two met to begin talking over a Brexit.
The French president has been among the toughest of negotiators over Britain's planned EU exit.
Today his language was more conciliatory - but he stressed that the UK can't enjoy unfettered access to the single market unless it also allows free movement of EU nationals.
In turn, Ms May insisted that the UK will not be rushed into starting formal talks leading to a Brexit as she said it would take time to reach the right agreement.
Theresa May and Francois Hollande will discuss Britain's plans to quit the European Union when they meet for talks on Thursday in Paris.
Conservative MPs could not have been happier with Theresa May's first outing at Prime Minister's Questions.
Theresa May launched a series of scathing attacks on Jeremy Corbyn during her first appearance at Prime Minister's Questions.