Simon Cowell shows off his softer side on Britain's Got Talent as he and fellow judge Bruno Tonioli jump out of a box to surprise kids group Amasing

This weekend, Simon Cowell, Amanda Holden, Alesha Dixon and Bruno Tonioli will return to Britain's Got Talent and continue to choose their favourite acts.

But before the judges make their all important decisions, Saturday night's upcoming episode sees TV's Mr Nasty show off his softer side.

In a teaser clip, Simon, 64, and newest judge Bruno, 68, are seen pulling up to a car park on their way to surprise a group of child singers, called Amasing.

After meeting the choir director, Rachel, she tells the pair she has nominated the children because 'they are amazing.'

She said: 'We're an art organisation and charity. We work with thousands of kids supporting mental health through the arts and I just thought that they deserve something really special and really exciting and all the children here absolutely love Britain's Got Talent.'

Saturday night's upcoming episode sees Simon Cowell show off his softer side as he and fellow judge Bruno Tonioli surprise a group of children

The pair hide inside a giant makeshift box and jump out to the grou of singers who have been having a party

After explaining the children had no idea the pair of them were in the building, Bruno revealed he knew of a plan to keep the suspense...by jumping out of a box.

Initially, Simon wasn't convinced and exclaimed 'no-one told me that', but then proceeds to clamber inside a giant makeshift box, next to Bruno.

As the huge box, adorned with a bow is wheeled out to the hall of children, the TV judges can hear screams of joy from group.

Bruno, laughing turns to Simon and says: 'The things we do eh?'

The music mogul and former Strictly Come Dancing judge are then seen bursting out of the box to be greeted by hoards of screams and cheers from the kids who  proceed to flock around them, giving them high fives.

One of the children bravely asks: 'Are you the real Simon Cowell?' to which the head judge replies by lifting up his sunglasses and exclaiming: 'Yes!'

Elsewhere, Bruno beams from ear to ear as he has a sweet encounter with one of the children who tells him it's the best day of their life, to which Bruno replies: 'It's the best day of my life too my darling!'

If all that excitement wasn't enough for the children, Simon surprises them further  by firstly congratulating them on being amazing singers and then letting them know they would all be joining him on Britains Got Talent.

Initially, Simon wasn't convinced about hiding inside a giant box with a bow and exclaimed 'no-one told me that' but proceeded to clamber inside, next to Bruno

The music mogul and former Strictly Come Dancing judge are then seen bursting out of the box to be greeted by hoards of screams and cheers from the kids

The children are completely surprised and proceed to flock around Simon and Bruno, giving them high fives

One of the children bravely asks: 'Are you the real Simon Cowell?' to which the head judge replies by lifting up his sunglasses and exclaiming: 'Yes!'

Simon surprises the children further by telling them because they are all such amazing singers  they would all be joining him on Britains Got Talent to perform

Also on this weekends show, Simon is left gobsmacked when he is reunited with the exact sports car he owned three decades ago.

In scenes set to air on Sunday, Trixy - who is an electrical engineer and father of two - vows to create a 'magical moment in time'.

The magician borrows fellow judge Bruno's watch and begins the jaw-dropping trick, using 50 photographs from throughout Simon's life.

Trixy shows a snap of the vintage red car, a 1971 Triumph TR6, and Simon admits: 'That's one of my favourite ever cars' - shortly before the magical reunion.

The media mogul is then taken outside the London Palladium theatre where he is reunited with the sporty motor, which is awaiting him on the red carpet. Simon is visibly stunned, and so delighted that he kisses the bonnet of the vehicle.

It has already been revealed that this year there will be a total of nine golden buzzer moments - marking the most the show has ever seen.

Returning hosts Ant McPartlin and Declan Donnelly revealed this meant that the show took longer to film because the judges were 'more chaotic' than ever.

Britain's Got Talent returns with a brand-new series, on Saturday at 19:30 and Sunday at 19:40 on ITV1 and ITVX.