Nicholas Lyndhurst, who played Rodney Trotter, was seen leaving the shop in Chichester on May 27.
Lyndhurst has won two National Television Awards for his role in Goodnight Sweetheart, as well as being nominated for a British Comedy Award and three British Academy Television Awards for his role in Only Fools and Horses.
The pair have previously been spotted by the beach, out on walks or enjoying lunch.
Nicholas Lyndhurst at The Range buying weed killer (Image: Sussex News and Pictures)
The couple’s son, Archie, died in 2020.
Archie followed his father into the profession, appearing in Jack Whitehall’s Bad Education series and voicing a character in the video game Final Fantasy XIV: Heavensward.
His breakthrough part came on CBBC comedy show So Awkward.