Regarding english test required for Tier 1 entrepreneur

[la]

Hi ,

Recently I have written toeic english exam and got b2 level score.

1) Do we need to pass only ielts to qualify for tier 1 entrepreneur english
2) Can we not show toeic results for tier1 entrepreneur
3) If toeic english test is ok , what is the level of score required required to qualify the english level for tier 1 entrepreneur.
4) If ielts english test is only required , how much score we need to show to qualify for tier 1 entrepreneur visa.
5) I am about to finish my masters. Pending with desecration.If I can get letter from the college saying I passed in all subjects and waiting for results. Is this letter sufficient to qualify for english level required for tier1 entrepreneur visa.

Could you please help me at the earliest.Thanks for millions help so far.