Diocese of Galloway
- Southwestern Scotland, comprising Dumfries, Galloway, East Ayrshire, South Ayrshire and most of North Ayrshire. Founded by St Ninian. Historical information, the bishop and his engagements, diocesan directory. Requires JavaScript.
- http://www.gallowaydiocese.org.uk/

Diocese of Nottingham
- Serving Nottingham, S. Nottingham, Derbyshire, Lincolnshire, Rutland and Leicestershire. Directories of clergy, parishes, schools and convents. News including Bishop, pastoral plan and Lourdes.
- http://www.grasshopper-hosting.co.uk/diocese/index.htm

Diocese of East Anglia
- Cambridge, Norfolk and Suffolk, England. Information on bishop, parishes, convents, schools, clergy and hospitals.
- http://www.catholiceastanglia.org/

Archdiocese of Cardiff
- Catholic Church in Wales' capital, Gwent and Herefordshire. Parishes, schools, retreat centres, convents. News and events have many empty spaces. Requires JavaScript.
- http://www.rcadc.org/

Archdiocese of Liverpool
- Roman Catholic archdiocese covering Merseyside (except Wirral), West Lancashire and the Isle of Man. Includes information about the cathedral, the archbishop and the Liverpool Archdiocesan Centre for Evangelisation, plus news and links. Requires JavaScrip
- http://www.archdiocese-of-liverpool.co.uk/

Archdiocese of Saint Andrews and Edinburgh
- Scotland's capital's Catholic diocese. Parish, schools, organisations. Archbishop's web space. Photos. Requires JavaScript.
- http://www.archdiocese-edinburgh.com/

Diocese of Lancaster
- Serves north Lancashire and Cumbria. For Mass times, parish information, links to parish websites and email addresses and diocesan agencies, Bishop's letters.
- http://www.lancasterrcdiocese.org.uk/

Diocese of Leeds
- West Yorkshire, England. History and statistics, directory of parishes by location, information on schools in the diocese, curriculum vitae of the bishop, information on diocesan offices and ministries.
- http://dioceseofleeds.org.uk/

Diocese of Dromore
- South Down, part of Armagh, and a very small part of County Antrim, Northern Ireland. History, map and parish directory.
- http://www.dromorediocese.org/

Diocese of Salford
- From the Mersey up to approximately the Forest of Bowland in Lancashire, England. History, statistics, maps, parish directory, bishop's engagements.
- http://www.salforddiocese.org.uk/

Diocese of Hallam
- South Yorkshire and parts of Derbyshire and Nottinghamshire, England. Map, history, diary, bishop's engagements, diocesan curia. Details on parishes, including links to web sites if possible, and where records are kept for closed parishes.
- http://www.hallam-diocese.com/index.htm

Diocese of Hexham and Newcastle
- Northeast England. Diocesan news and events, letters from the Bishop, and information about parishes and organisations in the Diocese.
- http://www.rcdhn.org.uk/

Diocese of Westminster
- Hertfordshire and part of London. Statistics, cardinal's diary, parish search and directory, news items.
- http://www.rcdow.org.uk/

Diocese of Dunkeld
- Scotland. Directories of diocesan offices and of Dundee parishes, organisations and religious orders active in the diocese.
- http://www.dunkelddiocese.org.uk/

Diocese of Down and Connor
- Northern Ireland. Provides information on parishes and schools within the diocese. Also includes press releases and calendar.
- http://www.downandconnor.org/

Diocese of Plymouth
- Southwest England. Covers Cornwall, Devon and Dorset, listing organisations, schools, parishes and churches.
- http://www.plymouth-diocese.org.uk/

Archdiocese of Southwark
- Covers London boroughs south of the Thames, plus the County of Kent, and the Medway Unitary Authority. Includes links to individual parishes and biographies of the archbishop and auxiliary bishops.
- http://www.rcsouthwark.co.uk/

Diocese of Paisley
- Scotland. News items, diocesan offices, information on the Diocesan Pastoral Council, links. Graphics-intensive.
- http://www.paisleydiocese.org.uk/

Diocese of Motherwell
- Glasgow City, South Lanarkshire and part of North Lanarkshire, Scotland. Bishop's engagements (in PDF), information on Carfin pilgrimage centre and on the Newmains Pastoral Centre, youth page. Everything else requires JavaScript.
- http://www.rcdom.org.uk/index.htm

Diocese of Middlesbrough
- Northeast England, including York and Hull. Has an alphabetical list of organisations in the diocese.
- http://www.middlesbrough-diocese.org.uk/

Diocese of Menevia
- South Wales. Maps, history, demographic information, statistics, parish directory, information on schools, news items.
- http://www.dioceseofmenevia.org/

Diocese of Clifton
- Bristol, Gloucestershire, Somerset, and Wiltshire, England. Parish directory, contacts in the chancery, press releases, vacancies.
- http://www.cliftondiocese.com/

Diocese of Brentwood
- Covers the county of Essex and the five east London boroughs. Diocesan administration, clergy, communities of sisters. Directories of parishes and Mass centres and of schools require JavaScript and do not work in Netscape 3.
- http://www.dioceseofbrentwood.net/

Diocese of Argyll and the Isles
- Western mainland Scotland and the Hebrides. Brief illustrated hagiography of St Columba. Information on the Catholic house of prayer on Iona. Directories of parishes and schools in the diocese.
- http://www.dioceseofargyllandtheisles.org/

Archdiocese of Glasgow
- Scotland. Official site with information on all aspects of the church and the community it serves.
- http://www.rcag.org.uk/

Archdiocese of Birmingham
- England. Comprises the counties of West Midlands, Oxfordshire, Staffordshire, Warwickshire and Worcestershire. Speeches and writings of the archbishop. Pastoral areas, directory of the archdiocesan curia, links to education. Parts of site are frames-depen
- http://www.birminghamdiocese.org.uk/