A Delegated Legislation Committee is set up to debate a statutory instrument (or a group of related statutory instruments).
You can attend and speak at a Delegated Legislation Committee even if you haven’t been appointed as a member of it, but only members of the Committee can vote and count towards the quorum.
The Committee membership is usually 17 MPs, plus an impartial Chair. The Committee of Selection appoints the members. The Speaker appoints the Chair from the Panel of Chairs (a group of MPs nominated for this purpose).
The Committee includes at least one minister and at least one spokesperson from the official Opposition. Sometimes a spokesperson from the third largest party is a member as well.