Richard Madeley paused Good Morning Britain on Monday after an emotional live interview with relatives of victims of the 1989 Hillsborough disaster, saying he needed a moment to compose himself before the programme went to a commercial break.

The interview, conducted alongside co-presenter Susanna Reid, marked a day campaigners described as historic: the proposed Hillsborough Law was due to be introduced to Parliament the following day. Two campaigners — Margret Aspinall, who lost her 18-year-old son James, and Charlotte Hennessey, who was six when her father Jimmy died at Hillsborough — spoke live from outside Downing Street after meeting the prime minister, Keir Starmer.

"I can barely imagine what you must be feeling," Madeley told the campaigners on air. Aspinall described decades of campaigning and fundraising to pursue legal action on behalf of bereaved families, saying, "No family should have to do that. We should never have had to fight. Today is a day of celebration, because we have done things that are monumental. It's history." Hennessey said the campaign had been draining at times but that families had "persisted" and insisted the proposed law be delivered in full.

After the interview, Madeley told viewers, "We'll just take two or three minutes to compose ourselves, and then we will be back," and the programme cut to a break. Co-presenter Susanna Reid remained on air during the segment. Political commentators on the programme, including Andrew Pierce and Kevin Maguire, later described the campaigners' achievement as a "fantastic victory," with both saying the families should not have had to endure the ordeal they faced.

The proposed Hillsborough Law is intended to compel public officials to tell the truth during investigations into major disasters. Campaigners and families have said the measure is intended to prevent the kinds of failures and cover-ups they say followed the crush at the FA Cup semi-final between Liverpool and Nottingham Forest at Sheffield Wednesday's ground in April 1989.

Ninety-seven Liverpool supporters died in the disaster; families and survivors have sought justice for decades after initial apportioning of blame to fans and subsequent inquiries that identified failures by police and other authorities. Former South Yorkshire Police superintendent David Duckenfield has been central to the public debate over responsibility; relatives have said lies and obfuscation by officers and officials prolonged their campaign for accountability.

Aspinall told the programme the legislation felt like recognition of the suffering and persistence of the families. "We never thought we'd get this far," she said, adding that there had been times when campaigners had considered walking away but that they had continued to press for change "for the good of the people, the good of the nation."

Good Morning Britain airs on ITV1 on weekdays and is also available to stream on ITVX. The programme has regularly featured Hillsborough campaigners and coverage of legal and parliamentary developments related to the disaster in recent years as families pursued a series of inquests, inquiries and appeals to clear the names of those who died and to seek institutional accountability.