TGI Friday's has planned a £70m investment into the UK over the next four years.
US owner Carlson, which took over the UK business last year, will use the funds to expand the number of sites, refurbish the restaurants and train staff.
Karen Forrester, UK managing director, told The Sunday Telegraph that the majority of the money will go on finding and opening new sites.
The brand currently operates from 49 restaurants in the UK, but the funding will take the chain up to 70.
However, she admitted there could be as many as 100 sites across the UK. With each restaurant employing approximately 100 people, this could mean as many as 5,000 jobs at the chain in coming years.
The funds will also be used to revive the brand. Forrester explained: "We would never want there to be a TGI Friday's on every corner. It is all about the experience."
TGI Friday's opened its 49th British site in Aberdeen last week and plans to open another two this year in the new Olympic retail park in East London and Manchester city centre.
By Gemma Rowbotham
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