King Charles is doing a “fantastic job”, particularly in the context of his “health challenges”, the prime minister has said after the royal was heckled by the Indigenous Australian senator Lidia Thorpe. Charles had just finished addressing MPs and senators at Parliament House in Canberra, as part of his five-day tour of Australia with Camilla, when he was approached by Thorpe, who yelled: “This is not your country.” After the launch of the public consultation on the future of the NHS on Monday, Keir Starmer was asked whether it was “disgraceful” that Australian politicians were “heckling the king”. Starmer said: “Look, I think the king is doing a fantastic job, an incredible ambassador not just for our country, but across the Commonwealth. “I think he’s doing a fantastic job, and we should remember in the context of health, that he is out there doing his public service notwithstanding, you know, the health challenges he himself has had – so I think he’s doing a great job.” Charles has paused his cancer treatment, after his diagnosis in February, while he carries out his first tour as monarch to Australia, and his state visit to Samoa. Starmer also praised the monarch as an “incredible ambassador” for the Commonwealth, and said he was looking forward to joining Charles in Samoa for the Commonwealth heads of government meeting (Chogm) summit. Thorpe had shouted at Charles: “You committed genocide against our people. Give us our land back. Give us what you stole from us – our bones, our skulls, our babies, our people. “You destroyed our land. Give us a treaty. We want a treaty in this country. You are a ‘genocidalist’.” As Thorpe was ushered out from the hall, she added: “Give us a treaty – we want a treaty with this country … This is not your land, this is not your land, you are not my king, you are not our king.” Thorpe later said in a statement: “The British crown committed heinous crimes against the First Peoples of this country. “These crimes include war crimes, crimes against humanity and failure to prevent genocide. There has been no justice for these crimes. The crown must be held accountable.” When asked if Britain was guilty of genocide in Australia, the prime minister’s official spokesperson said he would not be drawn on comments made in relation to royal matters. But he said Britain’s relationship with Australia was “fantastic” and that it was a key ally. But No 10 said Starmer remained opposed to apologising for the UK’s historical role in slavery, with the spokesperson noting talks around reparations are “not on the agenda” for the Chogm meeting. “The position on apology remains the same,” they said. “We won’t be offering an apology at Chogm, but we will continue to engage with partners on the issues as we work with them to tackle the pressing challenges of today and indeed for the future generations.”