Bangladesh

Hi, In Public colleges, Dhaka Medical College (DMC) is the best. In private their are many good colleges. You can check it on Google. But in my opinion, Bangladesh Medical College, Dhaka is the best private college.

You can do AMIE from The Institution of Engineers (India), if this is possible. You may visit this page http://www.amiestudycircle.com/amie-iei-contacts.html in this regard. About AMIE
http://www.amiestudycircle.com/about-amie.html.

Hi,
Eligibility
Candidate must be a graduate from a recognized college /university.
Admission Process
Eligible candidate can apply directly to the college.
To get admission you need to check with the college once.
https://www.shiksha.com/mba/course/master-of-business-administration-mibm-global-noida-254524

Hi, if you have not completed your 11th and 12th yet, you must complete the same before proceeding any further. For details on how you can apply to 11th and 12th programs in UK, you can read this guide:
https://studyabroad.shiksha.com/all-you-need-to-know-about-sixth-form-colleges-and-how-to-pursue-11th-and-12th-from-the-uk-articlepage-1085
Since, you are in England, you can go visit some colleges yourself and find out detailed information.

NIFT is the best. You should complete your 10th+12th to be eligible.