British Prime Minister Keir Starmer has visited the site of the Nazi German extermination camp Auschwitz ahead of talks with Poland's leaders on security and tightening Britain's ties with the European Union.

The prime minister was on his first visit to the concentration camp where 1.1 million people perished before its liberation 80 years ago.

The Prime Minister has warned a similar atrocity could happen again unless society upholds its duty to ‘make never again finally mean what it says’.

British PM says he saw 'sheer horror' at concentration camp which saw industrial-level killing as a 'collective endeavor by thousands of ordinary people'

King Charles will join world leaders at the commemoration event in Poland where lights will be laid in memory of those murdered.

U.K. Prime Minister Keir Starmer on Friday visited the site of Nazi German extermination camp Auschwitz, voicing his “sheer horror” at what he saw and vowing that he would fight the growing antisemitism which is causing fears to rise among Jews including in Britain.

Keir Starmer said nothing could have prepared him for the 'sheer horror' of the Nazi death camp and the visit had strengthened his determination to stamp out the 'poison' of anti-Semitism

Lady Starmer’s emotional return to Auschwitz as she visits concentration camp with prime minister - Sir Keir says it was his wife’s second visit to Auschwitz but it was ‘no less harrowing’

Commemorations at the concentration camp began earlier when Poland’s president Andrzej Duda joined Auschwitz survivors.

PM’s wife, whose Jewish father’s family fled Poland before Second World War, makes visit against backdrop of rising anti-Semitism

The Starmers' joint visit comes after Lady Victoria, who is Jewish, headed to the site without her husband on Thursday. An estimated 1.3 million people were sent to the camp complex, including nearly 1.1 million Jewish people. Of them, 960,000 died in the camp.

Charles joins dignitaries from around the world to mark 80th anniversary of liberation of Nazi concentration camp while Prince and Princess of Wales attend service in London alongside Keir Starmer