IELTS - Study without IELTS Questions

Is it important that my class twelfth exam was in English medium for my study abroad application in UK?

Do I need to submit IELTS scores or other English proficiency tests for admission if I have a Medium of Instruction (MOI) letter from my college in Malaysia?

Is IELTS mandatory for all countries or are there exceptions like UK and Dubai where IELTS can be taken after application?

Is there any special course in the UK that does not require IELTS or PTE?

Is it necessary to have cleared the IELTS exam before applying for the offer letter, or can I apply before clearing IELTS in Canada/New Zealand?

Will my high English scores in 11th and 12th grades exempt me from taking IELTS for admission in UK/Australia?

Can I study in Malta or France without IELTS?

Are there English waiver options available for UK and Ireland universities, and are they preferable?