Timothy Spall at Sea series is a set of three BBC Four television series that follows the voyage of actor Timothy Spall and his wife Shane as they take their Dutch barge, The Princess Matilda, on a circumnavigation around the British Coast, with visits to Northern Ireland and the Isle of Man.

Timothy Leonard Spall is an English actor and presenter. Spall gained recognition for his character actor roles on stage and screen. He is known for his collaborations with director Mike Leigh, acting in six of his films: Home Sweet Home (1982), Life is Sweet (1990), Secrets & Lies (1996), Topsy-Turvy (1999), All or Nothing (2002), and Mr. Turner (2014). He was nominated for the BAFTA for Best Actor in a Leading Role for his role in Secrets and Lies, and received the Cannes Film Festival Best Actor Award for his portrayal of J. M. W. Turner in Mr. Turner. In 2000, he was appointed Officer of the Order of the British Empire (OBE) by Queen Elizabeth II. He won the 2024 BAFTA TV Award for Best Actor in a Leading Role, for his performance as Peter Farquhar in The Sixth Commandment.