Ariana Grande & Justin Bieber go to Number 1 in the UK with 'Stuck with U'

Ariana Grande and Justin Bieber's charity collaboration has gone to Number 1 on The Official Big Top 40.

Ariana and Justin have claimed another Official Big Top 40 Number 1 each with their charity song 'Stuck with U'.

The track, which is raising money to fund scholarships for children of frontline workers whose lives have been affected by the COVID-19 pandemic, has climbed to the top spot on the UK's most listened to chart show.

The track had debuted at Number 5 last week, just two days after its release.

It's Ariana's fifth Number 1 in the UK and Justin's ninth - meaning he's now one away from equalling Ed Sheeran's record as the artist with the most Number 1 songs on The Official Big Top 40.

Megan Thee Stallion and KSI joined Will Manning on the show this Sunday.

Megan showed off her new puppy and talked about how her collaboration with Beyoncé came about. That remix of Megan's hit single 'Savage' was up two places to Number 11 this week.

Last time KSI was on The Official Big Top 40, the YouTuber, rapper and boxer tried to tee up a fight with Stormzy - which Stormzy politely declined when he was on the show a few weeks later.

However, this time around KSI discussed the possibility of a collaboration with the 'Vossi Bop' star. KSI's debut album Dissimulation is set to be released this Friday (22nd May).

Justin Bieber and Ariana Grande are doing their part to aid in the fight against the coronavirus pandemic.

The musical pair  — who premiered their duet "Stuck with U" and released its accompanying music video nearly one week ago — will be signing a limited number of CDs for 24 hours with all proceeds benefitting the First Responders Children's Foundation, a non-profit which provides grants and scholarships for the kids of first responders.

On Wednesday, Bieber announced the news with a video shared across his social media platforms.

"What’s going on guys? You guys asked and so we will be signing a limited number of CDs sold before Friday and all the proceeds will go to the First Responders Children’s Fund," he explained.

"So thank you so much for your support and we’re so excited to be partnering with such an amazing charity. You guys are the best," he added.

According to Bieber's website, the "Stuck with U" copy sells for five dollars and includes the original CD cover signed by Grande and Bieber, both 26, as well as the digital single.

The signed copies are available for 24 hours or until supplies last and will only ship to customers in the U.S

In addition to the signed CD initiative, all proceeds from the single will continue to go toward funding the First Responders Children’s Foundation.

Through YouTube donations alone, the song has already raised $32,143 from viewers who watched the music video.

The unique video — which was all shot on an iPhone — includes clips of fans and celebrities practicing social distancing amid the novel coronavirus (COVID-19) pandemic. (The singers also curated a "prom playlist" for Apple Music, available here.)

The duo's music video featured sisters Kendall and Kylie Jenner, Ayesha and Stephen Curry, Gwyneth Paltrow, Chance the Rapper, Lil Dicky, Michael Bublé, Ashton Kutcher and Mila Kunis, Demi Lovato and boyfriend Max Ehrich, as well as Jaden Smith.

Jillian Crane, president of First Responders Children's Foundation, thanked Braun, Grande and Bieber for their charitable song ahead of the release.

"On behalf of First Responders Children's Foundation, I would like to thank Scooter Braun and the entire SB Projects family for bringing all of us together and providing critical support for first responders and their families, and to Ms. Grande and Mr. Bieber for using the power of their music to lift the spirits of first responders responding to this crisis," Crane said in a statement. "We can’t underestimate the stress and suffering of heroes on the frontlines.

They are taking care of our communities and it is our responsibility as a Foundation to put money in the hands of the thousands of first responder families that have asked us for help during these tragic times."

The First Responders Children’s Foundation has already awarded more than $2 million in immediate grants to help families of first responders facing financial hardship because of the virus; funded thousands of hotel rooms; distributed critical PPE equipment; and paid for 16 funerals of first responders who have died of COVID-19.

As information about the coronavirus pandemic rapidly changes, PEOPLE is committed to providing the most recent data in our coverage. Some of the information in this story may have changed after publication. For the latest on COVID-19, readers are encouraged to use online resources from CDC, WHO, and local public health departments. PEOPLE has partnered with GoFundMe to raise money for the COVID-19 Relief Fund, a GoFundMe.org fundraiser to support everything from frontline responders to families in need, as well as organizations helping communities. For more information or to donate, click here.

Send your news and stories to us news@climaxradio.co.uk and WhatsApp: +447747873668.