Edinburgh-based caterer Heritage Portfolio has been granted the Royal Warrant of Appointment to Her Majesty the Queen as supplier of catering services.
The company has worked with the Palace of Holyrood House since 2002, catering for events that include the Queen's annual Royal Garden Party.
Ian D'Annunzio-Green, executive director of Heritage Portfolio, which last year celebrated its 10th anniversary, described the warrant as a fantastic achievement.
"Our ethos has always been about setting the highest possible standard in catering and hospitality and it is wonderful to be recognised in such a special way," he said.
"As one of only a handful of caterers to hold this honour, I am sure it will enhance our reputation for outstanding quality and attention to detail."
Royal warrants are granted to people or companies that have regularly supplied goods or services to the royal family for a minimum of five years out of the last seven years.