12 February 2016
A beneficial interest is "that right which a person has in a contract made with another" (third) person. example is "if A makes a contract with B that A will pay C a certain sum of money, B has the legal interest in the contract, and C the beneficial interest.
Beneficial interest in shares depicts the situation where the shares are held in then name of one person but originally relates to some other person
In that case, the person enjoying such privilege have to give a declaration to the Company and the person whose interest involved have to give a declaration too
Further the Company is also required to give a disclosure in the prescribed format to the Registrar of Companies as per Companies Act 2013
On the other Hand
Registered owner is the one on whose name share is registered.