Can I immigrate to Australia or New Zealand after studying in the UK?

Of course, but Australia's own academic qualifications are still relatively easy to be recognized by the Australian Immigration Bureau. Besides, I don't know what the Australian policy will be like after you graduate from studying in the UK. Recently, Australia has been reducing the number of immigrants and the threshold is getting higher and higher. If you really want to immigrate to Australia or New Zealand, I personally think it is best to choose the school here.