Gail Emms will mark 10 years since she was world number one by competing at the English National Badminton Championships this month.
The 37-year-old will contest the mixed doubles at the K2 in Crawley as she looks to add to her 12 national titles.
Emms, who won silver at the 2004 Olympics, retired after the 2008 Games.
She came out of retirement to compete at last year's championships, reaching the quarter-finals in both the women's doubles and mixed doubles.
Emms will team up with 2011 European junior champion Matthew Nottingham at the K2.
"This year is a big milestone for me personally as I celebrate the 10-year anniversary of becoming world number one," said Emms, who together with Nathan Robertson topped the mixed-doubles rankings in 2005.
"I want the badminton community to come out and support our top players again."
Commonwealth Games gold medallists Chris and Gabby Adcock are among the players competing at the tournament in Crawley, which runs from 30 January to 1 February.