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.
The Committee membership is usually 17 MPs, plus an impartial Chair. The Selection Committee appoints the members. Under rules agreed in September 2017, the Government will have a majority on Delegated Legislation Committees with an odd number of members in the 2017 Parliament. 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.