The Michael Jackson inspired production has also extended to April 2016
The company of Thriller Live! will fundraise for two weeks for Red Nose Day, which is on 13 March 2015.
The team are looking to "smash their own records" for charity collection at the Michael Jackson themed show, which has also extended booking to 17 April 2016.
Thriller Live!, which recently started its 7th year in the West End, is the longest-running production in the Lyric Theatre's 125-year history. It opened in January 2009 after three UK tours.
The show, which features a plethora of the late King of Pop's hits, was originally conceived and created by Adrian Grant, a long time associate of Jackson.
Producers Paul Walden & Derek Nicol said today: "It is such a feel-good show that it’s a feature of our celebration of the music and dance moves of Michael Jackson that our audiences are usually up on their feet dancing in the aisles by the end of the show. We now want them to encourage them to dig into their pockets and give as much as to Comic Relief as they can as our cast do bucket collections at the theatre exits."