General
Cemetery Scribes (Jewish burial records): http://www.cemeteryscribes.com/index.php
Family Search: https://familysearch.org/
FreeREG: http://www.freereg.org.uk/
Genealogy Links (including many PRs worldwide): http://www.genealogylinks.net/index.html
Genuki: http://www.genuki.org.uk/
Google Books (type Parish Register into the search box and tick full view only): http://books.google.co.uk/advanced_book_search
Online Parish Clerks: http://www.onlineparishclerks.org.uk/
Parish Chest Records (various counties): http://genealogy.hampshire.org.uk/ParishChest.htm
Parish Registers (to purchase): http://prtsoc.org.uk/index.php
Range of Parish Registers available as ebooks: http://openlibrary.org/search?q=parish+registers&has_fulltext=true
Another list of Parish Registers available as ebooks: http://www.ebooksread.com/search.php?q=parish+registers&t=book
Bedfordshire
Buckinghamshire
Cambridgeshire
Cornwall
Cornwall OPC: http://www.cornwall-opc-database.org/index.php
West Penwith: http://west-penwith.org.uk/
Derbyshire
Wirksworth: http://www.wirksworth.org.uk/frontpag.htm
Devon
Devon and Somerset PRs: http://www.parkhouse.org.uk/
Luppitt: http://www.luppitt.net/
Dorset
Church Knowle: http://members.iinet.net.au/~suegar/chknowle.htm
Glanvilles Wootton: http://www.opcdorset.org/GlanvillesWoottonFiles/GlanvillesWootton.htm
Langton Matravers: http://members.iinet.net.au/~suegar/langton.htm
Worth Matravers: http://members.iinet.net.au/~suegar/wthmat.htm
Wyke Regis, Melcombe Regis and Weymouth (burials): http://webapps-wpbc.dorsetforyou.com/apps/communities/genealogy.asp
Durham
Durham Cathedral records (ebook): http://www.ebooksread.com/authors-eng/durham-cathedral/the-baptismal-marriage-and-burial-registers-of-the-cathedral-church-of-christ--hru/page-7-the-baptismal-marriage-and-burial-registers-of-the-cathedral-church-of-christ--hru.shtml
Durham Records Online: http://www.durhamrecordsonline.com/index.php
Gloucestershire
Winterbourne: http://www.frenchaymuseumarchives.co.uk/NewArchives.htm
Hampshire
Crawley (St Mary's): http://www.downs-benefice.hampshire.org.uk/benefice/stmary.htm
Hampshire OPC: http://www.knightroots.co.uk/parishes.htm
Hampshire PRs: http://www.knightroots.co.uk/
Hampshire PRs: http://website.lineone.net/~mcgoa/pr.html
Kingsclere: http://www.weekehistory.co.uk/kingsclere.htm
Kent
sIsle of Thanet (various records): http://www.janetandrichardsgenealogy.co.uk/
Kent OPC: http://www.kent-opc.org/
Medway marriages: http://homepages.rootsweb.ancestry.com/~fleming/cityark.htm
Medway PRs: http://cityark.medway.gov.uk/
Mid-Kent marriages: http://www.woodchurchancestry.org.uk/midkentmarriages/index.php
Lancashire
Lancashire cemetery records: http://www.cemsearch.co.uk/
Lancashire OPC: http://www.lan-opc.org.uk/Search/indexp.html
Leicestershire
Lincolnshire
Middlesex
Middlesex PRs: http://www.angelfire.com/fl/Sumter/Middlesex.html
Norfolk
Norfolk PRs: http://www.doun.org/transcriptions/index.php
Salthouse: http://www.salthousehistory.co.uk/index.html
Northamptonshire
Yardley Gobion and Potterspury: http://www.mkheritage.co.uk/yghg/docs/frame-famhistory.html
Nottinghamshire
Nottinghamshire PRs: http://homepages.nildram.co.uk/~jimella/preg01.htm
Oxfordshire
South Leigh (memorial inscriptions): http://www.coggesparish.com/southleigh/inscrip/
Shropshire
Somerset
Somerset PRs: http://myweb.tiscali.co.uk/ian.sage/index.html
Somerset and Devon PRs: http://www.parkhouse.org.uk/
Suffolk
Woodbridge (Non-conformist records): http://www.woodbridgechurch.org.uk/Records/index.htm
Sussex
Sussex OPC: http://www.sussex-opc.org/index.php?no=1
Sussex Record Society: http://www.sussexrecordsociety.org/pllistyearrecords.asp?an=&ap=&Id=1762
Tyne & Wear
Warwickshire
Warwickshire OPC: http://www.hunimex.com/warwick/opc/opc.html
Westmorland
Westmorland PRs: http://www.northofthesands.org.uk/westmoreland/home.html
Wiltshire
Aldbourne: http://www.treelines.co.uk/OPC/opcintro.html
Wiltshire OPC: http://www.wiltshire-opc.org.uk/
Yorkshire
Pocklington: http://www.rickhagyard.com/
Rotherham: http://www.rotherhamweb.co.uk/
Sheffield: http://sheffieldindexers.com/index.html
Snaith (ebook): http://www.ebooksread.com/authors-eng/eng-parish-snaith/the-parish-registers-of-snaith-co-york-ian.shtml
Wakefield: http://www.wakefield.gov.uk/CommunityAndLiving/BereavementServices/GenealogySearches/default.htm
Yorkshire PRs (to purchase): http://www.parishchest.com/Yorkshire_Parish_Registers__LID14662
Yorkshire PRs (to purchase): http://yorkshireparishregisters.com/