Beverley Knight
Beverley Knight
Producers of WhatsOnStage Award winning screen-to-stage show The Bodyguard have released a teaser trailer of the new principal cast, who take over from Heather Headley and Lloyd Owen later this year.

The video features the two new stars taking part in a photoshoot for the show, and though it's very cleverly edited together there are some telling close-ups at various points.

And so, thanks to some quick detective work at WOS Towers, we reckon we've sussed who they are - chart-topping soul singer Beverley Knight and Casualty star Tristan Gemmill.

How did we work it out? Well, from the shot of the call sheet, which includes some interesting text at the top.

Under the heading 'photo shoot' are the names Beverley Knight, Tristan Gemmill and Gloria Onitiri:

Onitiri is Headley's understudy, who currently plays the role of Rachel Marron at matinee performances, and will play the role on a full time basis from 12 August until 7 September, before the new principal takes over on 9 September.

Lloyd Owen's final show as Frank Farmer is also the 7 September, so the new bodyguard will start performances at the same time as his leading lady.

Directed by Thea Sharrock, The Bodyguard is adapted from the hit 1992 film starring Whitney Houston and Kevin Costner and features classic Whitney songs including "One Moment in Time", "Saving All My Love", "I Wanna Dance With Somebody" and "I Will Always Love You".

Beverley Knight is one of the most successful British soul singers of recent times. Her hits include "Shoulda Woulda Coulda", "Keep This Fire Burning", "Piece of My Heart", "Gold" and "Greatest Day".

Tristan Gemmill is best known for playing Adam Trueman in Casualty, while other TV credits include Distant Shores, The Bill and EastEnders.

He recently tweeted:

We await confirmation of the news tomorrow! In the meantime, don't miss out on catching Heather Headley's sensational performance before her final show on 10 August 2013...