Harry Gardner brought the Britain's Got Talent audience to tears last night with his heart-wrenching tribute to his grandmother. He has since confirmed that his grandmother has died.

The teenage singer-songwriter who brought Britain’s Got Talent judges to tears with his rendition of a song about his ill grandmother has confirmed she has died since filming took place.

In Saturday night’s episode, Harry Gardner, 16, was given a standing ovation for his performance of Not Alone, a song he wrote himself about his grandmother, who was suffering from Alzheimer’s.

Posting on Facebook on May 2, Harry wrote: “So sad to say my nan, one of the most influential people in my life, has passed away.

He added: “Goodnight nan x”.

Viewers of Saturday night’s show who have experience with Alzheimer’s praised his performance on social media.

@AbiTheFryer tweeted: After working with dementia patients all day, absolutely sobbing at Harry Gardener’s audition on

@stephanieboy84 wrote: Wow @HarryGardner_ you brought me to tears! What a moving song. Really touching.Looking forward to hearing more from you!

A Virgin fund-raising page set up by Gardner to raise cash for Alzheimer’s Research UK saw an influx of donations following his performance, with one donor writing: “Your song had me in tears, my grandad was diagnosed 4 years ago and when u sing about still being in there is how I feel about him, love him to bits good luck.”