Singer Adele, who is supporting a Grenfell Tower Inquiry that gives survivors more confidence in the probe, attended the memorial service at St Paul’s Cathedral.
The award-winning pop star, dressed in black, stopped with actress Carey Mulligan to speak to someone in the congregation before the service started.
Earlier this month, the Hello singer backed a petition calling for Prime Minister Theresa May to take urgent action to restore survivors’ faith in the public inquiry.
Posting a link to the petition on Twitter – which has more than 16,000 signatures and is said to be backed by the families of around 50 victims, along with Grenfell United, an association of survivors from Grenfell Tower and nearby Grenfell Walk – Adele wrote: “Please sign this with me!
“We need your help to sign and spread the petition and encourage others to do the same.
“It’s been almost 6 months now, we must keep on talking about what is still not happening xx.”
The singer, who sat between Mulligan and her husband Marcus Mumford during the service, took an early interest in the aftermath of the blaze.
At around 1am on June 15, she paid a low-key visit to the site, staying for around 15 minutes.
Pictures of the star, who was born in Tottenham, north London, later emerged on Twitter.
Six days after the tragedy, she surprised firefighters when she turned up to thank them for their work, by banging on their window and offering cake.
The 29-year-old star visited firefighters for “a cup of tea and a cuddle” and joined them in a minute’s silence at a fire station in Chelsea.