Facebook is set to hire an extra 500 workers in the UK when it opens a new headquarters in London.
This will increase British workforce by half.
The US social media company will employ 1,500 people in London next year when it opens its office.
The offices are currently under construction in Fitzrovia close to the West End.
Nicola Mendelsohn, Facebook’s European head, will announce the expansion at the CBI’s conference on Monday.
She said many of the jobs would be high-skilled positions.
“The UK remains one of the best places to be a tech company and is an important part of Facebook’s story. We came to London in 2007 with just a handful of people. By the end of next year we will have opened a new HQ and plan to employ 1,500 people,” Lady Mendelsohn said.