Wikipedia
The Committee of Selection is a committee of the House of Lords in the Parliament of the United Kingdom. The committee is appointed to propose members of select committees and the panel of Deputy Chairmen of Committees.
The Committee of Selection is a select committee of the House of Commons in the Parliament of the United Kingdom. Unlike the Commons' other select committees, the Committee of Selection exists by virtue of the House's Standing Orders for Private Business, its rules for bills that affect only specific organizations or individuals. Despite that, the committee is best known for appointing members of committees established under resolutions of the House and the Standing Orders for Public Business.
With few exceptions, notably the Committee of Selection itself, the Standards and Privileges Committee, and the Liaison Committee, only members of the committee acting on its behalf may nominate new members to committees or propose the discharge of members. Appointments to select committees are made through motions put before the House of Commons, while appointments to general committees (such as public bill committees) are made by the committee's own authority. With respect to private business, all private bills are automatically referred to the committee, which in turn either refers unopposed bills to the Unopposed Bill Committee and refers opposed bills to committees whose members it also appoints.