UK IELTS - Score requirements

Can you tell me about the English proficiency exams required for studying abroad in UK/Australia for a Master's?

Is IELTS mandatory for Ireland visa approval, and is there an IELTS waiver for the UK for a Master's/Bachelor's?

Will writing IELTS help my visa chances in UK/Singapore?

If I want to pursue LLM again, what are the English language test (IELTS) requirements and other criteria in UK?

Are there any English proficiency exam requirements for UK, Ireland, and UAE?

Is IELTS mandatory for going to Ireland or the UK, and is it required only for visa purposes?

Is there any chance to move abroad with my current IELTS overall score of 6.0 and reading score of 5.5 in UK/Ireland for a Postgraduate?

Can you explain the IELTS exam in detail and its requirements for studying abroad in UK/UAE?