The Parliament of the United Kingdom (that is, the Houses of Commons and Lords) has a number of Committees – small numbers of members appointed to deal with particular areas or issues; most are made up of members of the Commons.

Select Committees

Commons

Communities and Local Government Committee (overseeing the operations of CLG)
Constitutional Affairs Committee (overseeing the operations of the Ministry of Justice and other agencies that report to the Lord Chancellor)
Culture, Media and Sport Select Committee (overseeing the operations of the DCMS)
Defence Select Committee (overseeing the operations of the MoD)
Education & Skills Select Committee (overseeing the operations of the DCSF and partly the DIUS)
Environment, Food and Rural Affairs Committee (overseeing the operations of the DEFRA and associated bodies)
Foreign Affairs Committee (overseeing the operations of the FCO)
Health Select Committee (overseeing the operations of the Department of Health)
Home Affairs Select Committee (overseeing the operations of the Home Office, Ministry of Justice, the CPS, and other related bodies)
International Development Committee (overseeing the operations of the DfID)
Science and Technology Committee (overseeing the operations of the DIUS and Research Councils)
Trade and Industry Committee (overseeing the operations of BERR, plus part of the FCO)
Transport Committee (overseeing the operations of the DfT)
Treasury Committee (overseeing the operations of the Treasury and HM Revenue and Customs)
Work and Pensions Committee (overseeing the operations of the DWP) Departmental

Northern Ireland Affairs Committee
Scottish Affairs Committee
Welsh Affairs Select Committee National

Environmental Audit Select Committee
European Scrutiny Committee
Liaison Committee
Public Accounts Select Committee
Public Administration Select Committee
Quadripartite Committee (Committees on Strategic Export Controls) - combined meeting of the Defence, Foreign Affairs, International Development and Trade and Industry Select Committees.
Regulatory Reform Committee - examines subordinate provisions to amend primary legislation as created under the Deregulation and Contracting Out Act 1994, amended by the Regulatory Reform Act 2001.
Select Committee on Statutory Instruments Topical

Select Committee on the Modernisation of the House of Commons
Select Committee on Standards and Privileges
Procedure Committee
Select Committee of Selection Domestic

Lords

Communications Select Committee
Constitution Committee
Delegated Powers and Regulatory Reform Select Committee
Economic Affairs Committee

• Economic Affairs Finance Bill Select Sub-Committee
  European Union Committee
  
  
  
  • Economic and Financial Affairs, Trade and International Relations (Sub-Committee A)
    Internal Market (Sub-Committee B)
    Foreign Affairs, Defence and Development Policy (Sub-Committee C)
    Environment and Agriculture (Sub-Committee D)
    Law and Institutions (Sub-Committee E)
    Home Affairs (Sub-Committee F)
    Social Policy and Consumer Affairs (Sub-Committee G)
    Hybrid Instruments Committee
    Merits of Statutory Instruments Select Committee
    Select Committee on Regulators
    Science and Technology Committee Topical
    
    House Committee
    Committee for Privileges
    Procedure Committee
    Committee of Selection Internal
    
    Administration and Works Select Committee
    Refreshment Select Committee Domestic
    
    Joint Committee on Consolidation, &c., Bills
    Joint Committee on Human Rights
    Joint Committee on Statutory Instruments
    Joint Committee on Tax Law Rewrite Bills General Committees
    As well as the Select Committees and General Committees, there are also a number of other Parliamentary Committees.
    
    Advisory Committee on Works of Art
    Ecclesiastical Committeee
    Members Estimate Committee
    Members Estimate Audit Committee
    Public Accounts Commission
    Joint Committee on Security (advises on the security of the Parliamentary Estate)
    Speaker's Committee