Did the apartheid regime in South Africa frame itself as anti-imperialist or decolonial, particularly against British imperialism?

To what extent did the apartheid regime in South Africa present itself as anti-imperialist, especially in opposition to British imperialism? I understand that Afrikaner nationalism emerged partly from resentment toward the United Kingdom, particularly after the Anglo-Boer Wars and the incorporation of the Boer republics into the British Empire. When National Party came to power in 1948 and later established the republic in 1961, did it frame apartheid as a form of national self-determination or “decolonization” from British influence? More broadly, was apartheid-era republicanism portrayed domestically or internationally as an anti-imperial project, and how did this rhetoric coexist with the regime’s racial hierarchy and domination over the Black majority?