Leader of Britain's Liberal Democrats, Tim Farron, speaks at a rally following an anti Brexit, pro-European Union (EU) march in London on March 25, 2017, ahead of the British government's planned triggering of Article 50 next week. Britain will launch the process of leaving the European Union on March 29, setting a historic and uncharted course to become the first country to withdraw from the bloc by March 2019. / AFP PHOTO / CHRIS J RATCLIFFE (Photo credit should read CHRIS J RATCLIFFE/AFP/Getty Images)

Leader of Britain's Liberal Democrats, Tim Farron, speaks at a rally following an anti Brexit, pro-European Union (EU) march in London on March 25, 2017, ahead of the British government's planned triggering of Article 50 next week.
Britain will launch the process of leaving the European Union on March 29, setting a historic and uncharted course to become the first country to withdraw from the bloc by March 2019. / AFP PHOTO / CHRIS J RATCLIFFE        (Photo credit should read CHRIS J RATCLIFFE/AFP/Getty Images)