Alison Moyet and Jack Dee are among the latest names added to this year’s Latitude line-up.

Moyet will be joined by music acts Ghostpoet, Transgressive present Snakehips live, Simian Mobile Disco live, Two Inch Punch live, Bless DJs and the National Portrait Gallery present The Portrait Choir Anonymity.

Dee brings his new show Jack Dee’s Helpdesk to Latitude. Other comedians performing include Mark Watson and Ed Gamble.

Appearing on the literary stage will be Vivienne Westwood, talking about Greenpeace’s Save the Arctic campaign with Jon Sauven and Frank Hewetson; How I Live Now author Meg Rosoff and winner of the Wainright Prize for travel writing Hugh Thomson.