Frances Wood, Joelle Moses, Adam Isaac and duo Matt Clubb and Sueleen Fletcher all left 'The Voice' last night (13.05.12).

Four stars of the show were selected by coaches Sir Tom Jones and will.i.am to leave the BBC one programme, pushing Ruth Brown, Leanne Mitchell, Jaz Ellington and Tyler James on to the semi-final of the BBC show.

Jaz overcame a vomiting bug to progress via the public vote, while mentor will saved Tyler.

Tom struggled to choose after popular Ruth - who sang Emilie Sande's 'Next To Me' on the Saturday night show (12.05.12) - went through with the public vote, but he eventually chose Leanne.

Meanwhile, Holly Willoughby caught producers on the show watching the 'Britain's Got Talent' final while recording their own programme.

The co-host of the BBC One series rumbled her bosses tuning in to see dancing dog Pudsey and his owner Ashleigh crowned winners of ITV1's rival talent show on Saturday night (12.05.12) as the blonde presenter prepared to do a link to coach Sir Tom Jones to ask which one of his acts he was sending home.

An audience member on 'The Voice' - which saw will.i.am axe Frances Wood and Joelle Moses, while Tom Jones booted out Adam Isaac and the duo of Matt Clubb and Sueleen Fletcher - overheard Holly saying: "Gallery, I can't believe you've got that up on there!"

A source added to The Sun newspaper: "People in the audience fell about laughing. Even 'The Voice' bosses wanted to know who had won 'BGT'."