In British politics, parliamentary select committees can be appointed from the House of Commons, like the Foreign Affairs Select Committee; from the House of Lords, like the Delegated Powers and Regulatory Reform Committee; or as a joint committee of Parliament drawn from both, such as the Joint Committee on Human Rights. Committees may exist as "sessional" committees – i.e. be near-permanent – or as "ad-hoc" committees with a specific deadline by which to complete their work, after which they cease to exist, such as the Lords Committee on Public Service and Demographic Change.
The Commons select committees are generally responsible for overseeing the work of government departments and agencies, whereas those of the Lords look at general issues, such as the constitution, considered by the Constitution Committee, or the economy, considered by the Economic Affairs Committee. Both houses have their own committees to review drafts of European Union directives: the European Union Committee in the House of Lords, and the European Scrutiny Committee in the House of Commons.
The Intelligence and Security Committee is not a select committee, though it contains members from both houses. It is a unique committee of parliamentarians nominated by the Prime Minister and reporting to him or her, not Parliament. Under the House of Commons Reform Committee the Chair of the committee will be elected, it was part of the committee's reform plans to make attendance of the meetings higher and the discussion for the committees more in line for public discussion.
The Backbench Business Committee was created in 2010 as a non-ministerial committee to cover non-government business, following recommendations from the Reform the House of Commons report under the Wright Committee.  The Wright Committee also instated that the members and chairs of committees must be appointed their position by the House, with also the limitations of the number of members to 11 and the number of committees in general being reduced.
Specialised committees of investigation had existed within Parliament since Tudor times and the system of committees was further developed during the mid 1960s by Richard Crossman as Leader of the House of Commons
In the United Kingdom, the modern system of departmental select committees came into being in 1979, following the recommendations of a Procedure Select Committee, set up in 1976, which reported in 1978. It recommended the appointment of a series of select committees covering all the main departments of state, with wide terms of reference, and with power to appoint specialist advisers as the committees deemed appropriate. It also suggested that committee members should be selected independently of the party whips, as chosen by the Select Committee of Selection. The fourteen new committees began working effectively in 1980.
In the House of Commons
The post-1979 system is made up of three main types of committee. Departmental committees shadow each of the main government departments - for example the Education Select Committee shadows the Department for Education. A number of committees work on general themes which are not the responsibility of any single department - for example, the Science and Technology Select Committee, and Women and Equalities Select Committee. Another group of committees deal with the internal affairs of the House (for example, the Procedure Select Committee and Standards and Privileges Select Committee).
Rarely, there are also select committees of the Commons (and sometimes joint standing committees) that are tasked with the detailed analysis of individual bills. Most bills are referred, since the 2006–07 session, to public bill committees, and before that, there were standing committees.
The chairs of (the majority of) select committees have been elected by the house as a whole since June 2010: before that the members were appointed by their parties and chairs voted on solely by those members.
The chairs of committees are allocated to political parties on the basis of their numerical strength in the House of Commons. Negotiations between party managers determine which party will hold which committee chair. By convention, the Public Accounts Committee is chaired by a member of the main opposition party, while the Treasury Select Committee is chaired by a member of the governing party. The remaining places on the committee are allocated in proportion to the numerical strength of the parties in the House of Commons. These positions are filled by votes conducted within party caucuses. This means that positions on select committees are only ever contested among members of the same party. The standard number of members on a departmental committee is 11, although some committees such as Public Accounts have a larger membership.
In July 2005, the Administration Select Committee was instituted, replacing the five 'domestic' committees which had been responsible for the consideration of services provided for the House in the Palace of Westminster from 1991 to 2005. It deals with issues as diverse as catering services, the House of Commons Library, digital services provision, and visitor services.
The powers of Select Committees in the Commons are governed by the Standing Orders. The powers of departmental select committees are set out in standing order 152 as follows:
"Select committees appointed under this power shall have power-
(a) to send for persons, papers and records, to sit notwithstanding any adjournment of the House, to adjourn from place to place, and to report from time to time;
(b) to appoint specialist advisers either to supply information which is not readily available or to elucidate matters of complexity within the committee's order of reference; and
(c) to report from time to time the minutes of evidence taken before subcommittees, and to lay upon the Table of the House the minutes of the proceedings of subcommittees;
and the subcommittees appointed under this order shall have power to send for persons, papers and records, to sit notwithstanding any adjournment of the House, to adjourn from place to place, to report from time to time the minutes of their proceedings, and shall have a quorum of three" 
In the House of Lords
The House of Lords has a set of five major select committees:
- The European Union Committee, which currently has six sub-committees
- The Constitution Committee
- The Economic Affairs Committee
- The Science and Technology Committee (House of Lords)
- The Communications Select Committee
These committees run inquiries into topics within their remit, issuing reports from time to time. The European Union Committee also scrutinises EU legislation and other EU proposals, as well as conducting inquiries.
Some English local authorities also have a select committee system, as part of their Overview and Scrutiny arrangements.
Rules regarding their work
- Committee on Public Service and Demographic Change - UK Parliament. Parliament.uk. Retrieved on 2013-08-12.
- "Select Committees". UK Parliament. Retrieved 2020-01-01.
- "Reform of the House of Commons Committee". UK Parliament. Retrieved 2020-01-01.
- Jones et al. (2001) Politics UK 4th Edition, pp. 359–363
- Norton, Philip (2013). Parliament in British Politics. Basingstoke: PalgraveMacmillan.
- Results of elections for select committee chairs announced - News from Parliament - UK Parliament. Parliament.uk (2010-06-10). Retrieved on 2013-08-12.
- House of Commons - Rebuilding the House - House of Commons Reform Committee. Publications.parliament.uk. Retrieved on 2013-08-12.
- Role - Administration Committee - UK Parliament. Parliament.uk.
- "Standing Orders of the House of Commons - Public Business". Retrieved 4 February 2020. This article contains quotations from this source, which is available under the Open Government Licence v3.0. © Crown copyright.
- Gay, Oonagh (2005-08-04). "The Osmotherly Rules (Standard Note: SN/PC/2671)" (PDF). Parliament and Constitution Centre, House of Commons Library. Archived from the original (PDF) on May 30, 2009. Retrieved 2009-05-22.