It's standard Labour & BBC practice to make them appear squeaky clean, politically correct & holier than thou
Blair, Bottler Brown & Co apologised for the Slave Trade, Irish Famine, the British Empire and so on. I'm not sure what Milliberk has said sorry for. Maybe we taught Maoris to stick their tongues out or suchlike.
You will never of course hear any apologies for open door immigration, Human Rights Act etc etc