Staff and trustees at Stratfords celebrated the firm’s 100th anniversary when a plaque with a new company logo was unveiled.
More than 100 people attended a party held at the Masonic Hall in North Lynn, including staff and trustees past and present, suppliers and other guests.
West Norfolk Mayor Nick Daubney was on hand to unveil the plaque, which will be hung at the trade counter at the business in Hamburg Way.
Judith Broughton, chief executive, said: “It is a great achievement for a business to get this far and it is absolutely fabulous to be part of it.
“It was lovely to have everybody coming back to meet up.”
The party included a hog roast and a raffle, with proceeds going to The Norfolk Hospice, Tapping House at Hillington, in memory of staff member Jackie Whiley who died in 2014.
Stratfords is one of Lynn’s longest-surviving businesses and was set up at the end of the First World War in 1918 by George William Stratford.
It was a prominent Army and Navy-style store and over the years, branched out into different areas.
It now supplies workplace clothing to the food, agriculture, construction and engineering industries.
Since 2000, following the death of the last family member, Stratfords has been run as an asset of a charitable trust offering support to local history projects and museums.