ISS Eaton managing director Simon Titchener revealed back in February that the company was in negotiations to purchase a B&I caterer.
The Catering People, founded by Andy North and Aileen Smith, has annual turnover of £10m and employs more than 250 people.
Active in the B&I sector, the firm also operates in the public sector and education markets.
Titchener said: "As a result of ISS Eaton's continuing growth within the UK, this is a strategic acquisition that blends two like-minded companies under one brand."
North said he was confident that ISS Eaton would respect and complement the business and that he looked forward to working as part of a team.
By Chris Druce
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