London tech start-up what3words has appointed Chris Marks as its new chairman.

Marks is the founder of data and analytics firm eBit labs and has spent a large part of his career in banking, including as CEO of NatWest Markets.

Co-founded in London in 2013 by Chris Sheldrick, what3words uses a system which covers the entire world in a grid, each section of which has a unique three-word address.

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The tech startup has divided the world into three metre squares and gives each square a unique combination of three words.

The platform was designed to be human friendly, and easy to use with voice input alone.

Speaking about his new role Marks said: “I am thrilled to have joined what3words as their new chair. It’s an honour to be a part of such a talented, driven team.

“A team that supports millions of people around the world to make their life safer, more efficient and less frustrating and helps thousands of businesses to improve efficiency and customer experience. Ready to get started.”

Chris Sheldrick, co-founder and CEO of what3words, said: “Delighted to welcome Chris Marks as what3words chairman.

We’re immensely excited to have someone of Chris’ calibre and impressive track record joining our board, having served as long-standing CEO of NatWest Markets, chair of the NatWest Markets Netherlands supervisory board, trustee at the English National Ballet, and co-founder of eBit Labs. Welcome on board the team Chris.”

What3words is now used in 193 countries around the world and has been widely adopted by emergency services.