British actor Richard E. Grant will feature as a hologram in the upcoming theatre musical Water Babies.

The Withnail & I star will pre-record his role in the stage adaptation of Charles Kingsley's children's novel, in which a young man jumps into a violent river and encounters a civilisation of underwater creatures who he must help before he can return to dry land.

Grant, who recently finished filming a guest role on British period drama Downton Abbey, will appear as a mythical sea monster dubbed the Kraken.

He announced the project on on Friday (11Apr14), writing, "Done on Downton (Abbey) & filming a hologram playing the Kraken for a stage musical version of The Water Babies today. Fully plate licked Friday."

The musical, starring Tom Lister from British soap opera Emmerdale, will open at the Curve Theatre in Leicester, England from 6 May (14).