She believes he died while attempting an online challenge in 2022, and she is one of a group of British parents suing TikTok in the US. The Duke and Duchess of Sussex hailed Ellen’s campaigning to ensure “no other parent faces the same barriers she did”.

Commending her hard work, the couple said in a statement on their official sussex.com website: “We first met Ellen in New York last year, where she shared Jools’ story with the same determination that’s now changed the law.

“Jools is one of the faces featured in our Lost Screen Memorial, a reminder of why this work matters.

“Ellen’s strength isn’t unique—it’s what we’ve seen from every bereaved parent we’ve worked with. Their grief becomes purpose. Their loss becomes advocacy. And now, their fight has become law.

“To parents currently facing this struggle: you should never have been put through this. Change is possible. Ellen has proven it.”

Harry and Meghan unveiled the Lost Screen Memorial in New York City in April last year. It’s a moving art installation, with lightboxes designed to resemble smartphones, honouring the lives of children lost to online harm. The couple attended a private vigil at the site, standing in solidarity with nearly 50 families whose children were commemorated in the installation.

Harry and Meghan added: “One parent can change everything. Thousands of families will now have answers because Ellen Roome refused to back down and give up. Thank you, Ellen, and all of our courageous parents.”

Ms Roome said ahead of Sir Keir Starmer setting out new plans to prevent harms: “This is about truth. This is about accountability.

“This is about holding social media companies accountable when we can prove the harms they are fed online. But because of Jools, and because of relentless campaigning, other families will now have access to answers.

“Whilst this is a massive step forward, we must ultimately do more to stop children being harmed or dying in the first place. Preservation after death matters. Prevention before harm matters even more.

“And I fully support Lord Nash’s amendment to raise the age limit to 16 for the most harmful platforms. We must be brave enough to go further.”