The list includes all R18s from the first hardcore R18 of 16th August 2000 through 2003.
Thereafter only cuts of significant interest have been included
Thanks to Sergio who now maintains the complete list of R18s on his site 

Hardcore R18s Cuts Latest 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

G

by Alexander Institute
Deborah Sundahl
65:43s. Compulsory cuts of 6m 27s were required to remove images of women expelling liquid during sexual activity.

by GB King
Jenna Red, Dennis, Alina Amata, Tomas, Sandra De Marco, Ram, Michael V., Ricardo Bell, Jason, Zenza Raggi.
112m 22s. Cuts of 4m 5s were required. The cuts were Compulsory.
Distributor was required to remove three scenes of deep throat fellatio where the woman was visibly uncomfortable or distressed during the activity.

by Gregg Alan
Shyla,Kimberly,Judy
89m 37s. Cuts of 0m 32s were required to remove abusive dialogue references to underage sexual activity.

by Su Producer
Dana Vespoli, Gia Paloma, Katsumi
97m 36s. Cuts of 1m 3s were required., some or all of these cuts were substitutions. The cuts were Compulsory.
Cuts required to remove abusive and potentially harmful activity, in this case sight of a man firmly gripping the neck of a woman during sexual activity.

by Su
Asia, Cora Corina, Martina.
121m 38s. Cuts of 0m 14s were required., some or all of these cuts were substitutions. The cuts were Compulsory. A cut was required to remove the sight of abusive activity - aggressive thrusting and head restriction during deep throat fellatio

by Jean Yves Lecastel & Pierre Woodman
Gina Blonde, Sunny Blue, Sarah, Robert Rosenberg, Franco Roccaforte, Steve Holmes, Pascal St. James, Jean Pierre Armand, Frank Gun, James Brossman, Bob Terminator, Sebastian Barrio
Cuts of 0m 6s were required to remove abusive dialogue reference to underage sex

by Christopher Alexander
Cricket,Monique Demoan,Kelsey Heart
89m 54s. Cuts of 1m 23s were required to suggestion of coercion in lead in to explicit sex scene , removing all sight of two women being verbally abused, physically abducted from the street and apparently forced to have sex with a group of men in a locker room. FurtheCut required to sight of a man gripping a woman tightly around the throat during a scene of unsimulated sexual activity, as this is a scene of potential harm in a sexual context during which time the woman's breathing and blood supply to the brain are being obstructed.

by Christopher Alexander
Sienna,Kimberly,Gauge
89m 20s. Cuts of 0m 19s were required to sight of asphyxiation during sexual activity in an explicit sex tape.

by Christopher Alexander
Aurora Snow,Flick Shagwell,Kinky
89m 21s. Cuts of 4m 57s were required.to remove a set-up which suggests the women involved do not consent to sexual activity, and to a sequence in which a woman appears not to consent to penetration and appears to be in pain.

by Asian Eyes
Maki,Kyoka,Emiko
76m 48s. Cuts of 17m 26s were required to remove a scene of abusive and non-consensual sexual activity.}

by James Edwards
Gemma Johnson, Red, Vicky Powell.
81m 7s. Cuts of 42m 3s were required. The cuts were Compulsory. Cuts required to sight of sexual activity in the UK which could be seen by members of the public

(Erigo Distribution)
submitted in 2008, run time 117:57s
Cut by 17s: A cut was required to remove sight of urination immediately following penetration.

by Sammy Sixx
Luissa Rosso, Maddison Knox, Michelle Banks, Sativa Rose, Svetlana, Tiffany Holiday.
116m 24s. Cuts of 0m 56s were required. The cuts were Compulsory.
Cuts required to scenes featuring threats, humiliation and abusive behaviour in a sexual context (spitting, verbal abuse, forced fellatio causing gagging)

by Jules Jordan
Lexington Steele, Gina Lynn, Belladonna.
126m 5s. Cuts of 13m 12s were required., some or all of these cuts were substitutions. The cuts were Compulsory. Compulsory cuts for R18 required to remove sight of wax being dripped on genitalia, sight and sound of female performer gagging during potentially harmful deep throat fellatio and verbal references to abusive and potentially harmful activity,

by Harry S. Morgan
Gina Wild,Eva Rasso,Vivien Lash
86m 46s. Cuts of 0m 13s were required to remove sight of urolagnia (in this instance, urination during sexual activity).

by Harry S. Morgan
Gina Wild,Conny Dachs,Jan Jonas
83m 9s. Cuts of 0m 15s were required to references to under-age / illicit sex.

38m 25s. 21m 57s Cut required to scenes of sex acts and nudity occurring in public places in the UK

by Dan Tana
Not known.
159m 45s. Cuts of 1m 59s were required. The cuts were Compulsory.
Compulsory cuts were required to abusive activity (man grabbing woman's throat and slapping her breasts during sex),

Submitted in 2006
By Viv Thomas
Jo, Sophie Moone, Vera, Sandy
139m 4s. Cuts of 5m 42s were required to remove the sight of vaginal fisting.

by Viv Thomas
Jo, Sophie Moone, Vera, Sandy.
130m 2s. Cuts of 5m 42s were required. The cuts were Compulsory.
A cut was required to remove the sight of vaginal fisting

by Not Known
Not known
240m 14s. Cuts of 4m 16s were required to scenes containing a potentially harmful activity (masturbation and penetration involving power drills), degrading and abusive activity (aggressive spitting into mouth during sex scene) and a title likely to encourage an interest in abusive relationships.

by Not known
Not known
227m 45s. Cuts of 0m 11s were required to remove title which encourages an interest in underage sexual activity.

by Unknown
Olivia, Sarah, Sunny Lia, Jessica May
75m 49s. Cuts of 0m 39s were required. The cuts were Compulsory. Cut required to sight of scissors being played on woman's bare breasts and knickered crotch

by Spyder Jonez
Tera Patrick, Lucy Thai.
106m 38s. Cuts of 0m 16s were required. The cuts were Compulsory. Distributor was required to remove a scene of urination during masturbation

by Dan Dapper
Jayna Oso, Lucy Lee, Jada Fires.
109m 35s. Cuts of 3m 16s were required. The cuts were Compulsory. Cuts were required to remove instances of urolagnia, in accordance with the current interpretation of the Obscene Publications Act 1959, face slapping, throat holding, aggressive deep throat fellatio, gagging and choking

by Axel Braun
Nikki Love, Tiana Lynn, Staci Thorn, Avena Lee, Kandi Kane, Ben English, Chris Charming.
80m 30s. Cuts of 6m 8s were required., some or all of these cuts were substitutions. The cuts were Compulsory. Compulsory cuts for R18 required to remove obscene images (in this case, urination during sexual activity)

by Max Steiner
Not known.
88m 54s. Cuts of 0m 18s were required. The cuts were Compulsory. Cut required to sight of woman choking during deep throat fellatio,

Not known
Not known.
101m 11s. Cuts of 15m 16s were required., some or all of these cuts were substitutions. The cuts were Compulsory. Cuts required to sight of urolagnia (urination and sexual activity happening simultaneously, woman licking urine off hand and urination onto sexual organs)

by Brandon Iron
Not known.
159m 47s. Cuts of 0m 20s were required. The cuts were Compulsory. Compulsory cuts required to a scene encouraging an interest in underage sex (a woman referring to having had sex at fifteen) to obtain an R18,

Not known
Not known
134m 0s. Cuts of 0m 30s were required., some or all of these cuts were substitutions. The cuts were Compulsory. Cuts were required to remove references to an incestuous relationship between two of the protagonists

by Guy Capo
Gia Jordan.
125m 25s. Cuts of 1m 43s were required., some or all of these cuts were substitutions. The cuts were Compulsory. Compulsory cuts were required to remove obscene images (in this case, sight of urination during sexual activity)

by Guy Capo
Katarina Kraven.
101m 21s. Cuts of 0m 32s were required., some or all of these cuts were substitutions. The cuts were Compulsory. Cut required to abusive and potentially harmful sexual activity (in this instance sight and sound of female performer choking during fellatio)

BDSM video by Derek Bartle (Dom Promotions)
Mistress Astrid, Andy Marcy, Smithers, Chris, Gwen.
Submitted in 2007, running time 101:07s
Cut by 1:35s. Cuts were required to sight of raised weals, burst blood vessels or breaks in the skin on bare buttocks during hits on the buttocks with a wooden paddle and during caning, injuries that go beyond "trifling and transient".

by Wendi Knight
Melisa Sweet, Janet Alfano, David Perry, Chris Charming, Evan Stone, mr. Pete.
158m 7s. Cuts of 0m 23s were required., some or all of these cuts were substitutions. The cuts were Compulsory. The distributor was required to remove a scene of actual/potential harm (a woman choking during deep-throat fellatio)

by Gene Ross
Veronica Caine,Brooke Hunter
87m 11s. Cuts of 1m 46s were required  to abusive and dangerous activity (asphyxiation) featured in various explicit sex scenes.

by Vince Vouyer
Faith,Rose Petal,Ashley Long
139m 43s. Cuts of 1m 22s were required to remove sight of a woman having her breathing restricted during explicit sexual activity.

Hardcore R18s Cuts Latest 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z