Just so we don't end up with ten pages of disagreements and uncertainly, the answer to your question is yes. An MCB is required to provide overcurrent protection.
No they don't.
Are you seriously saying that you would be happy installing a lighting circuit with NO over-current protection at all?????
Are you seriously saying that I suggested any such thing.
Stop reading between the lines, and just read whats been written.
...... and even if the OP didn't phrase the question very well, I think we can all see what the intent was.
Yes and it appears that he has achieved his aim!!!! again!