Twitter has appointed UK entrepreneur Martha Lane Fox and Pepsi CFO Hugh Johnston to its board after the departure of former members Peter Currie and Peter Chernin.

Baroness Lane Fox is the co-founder of travel website lastminute.com, member of the House of Lords, and chairwoman of diversity-focused UK organisation Doteveryone, which is working to promote understanding of digital technologies.

Currie and Chernin's terms will end in May following the company's annual meeting, according to Reuters.

Jack Dorsey, chief executive officer at Twitter, wrote in a series of tweets posted on Friday: "Welcome @Marthalanefox and @hughjohnston to the @Twitter board! And thanks to @plscurrie and @PeterChernin for all your years of service!

"More additions to the board soon, ones that will bring diversity and represent the strong communities on Twitter. This matters & is a must."

Announcing the news, Lane Fox tweeted: "I'm joining the board of @twitter Thanks @jack @omidkordestani I can't wait. Best. Job. Ever. Watch out silicon valley :-))".

Twitter was notably criticised for its lack of diversity in November last year, and has since made an effort to change.

Following a blog post written by former engineering manager Leslie Miley in which she criticised the lack of women and people of colour in Twitter's engineering and product division, senior vice president of engineering Alex Roetter responded: "I realise that we have blind spots, myself included.