British Prime Minister Theresa May will tell her Conservative Party on Wednesday that the impending divorce from the European Union is an opportunity that opens up a future full of promise, assuring the faithful: "We have everything we need to succeed."

In a speech on the final day of her party's conference, May, who quietly campaigned to stay in the EU in a 2016 referendum, will take aim at critics who accuse her of failing to embrace Brexit.

With only six months before Britain leaves the EU, May is under pressure over Brexit in Brussels and at home, where some of her loudest critics, particularly former Foreign Secretary Boris Johnson, have done little to hide their leadership ambitions.