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

T

by Matt Ass
Gloria Gucci, Simony Diamond, Vanda, Cony Ferrara.
135m 40s. Cuts of 0m 9s were required. The cuts were Compulsory. Compulsory cut for R18 required to remove sight of abusive and potentially harmful sexual activity (a woman choking during deep-throat fellatio)

by Jules Jordan
Nikki Dee, Brittney Sky, Keri Sable, Alexis Malone, Sativa Rose, Mary Jane.
134m 17s. Cuts of 4m 36s were required., some or all of these cuts were substitutions. The cuts were Compulsory. Cuts were required to scenes with consent problems (a woman bound and gagged), the association of sex with violence (a knife being run over a man's body) and abusive sexual activity (a woman's throat being held and her face slapped) to achieve the R18,

(Phoneix films)
Submitted in 2008, running time 137:41s
Cut by 1:58s. The distributor was required to make four cuts to remove sight of urination during sexual activity,

by Kylie Ireland
Not known.
138m 41s. Cuts of 1m 50s were required. The cuts were Compulsory.
Cuts required to sight of dildo pushed into woman's mouth causing her to choke,

by Jake Malone
McKenzie Lee, Katja Kassin.
156m 2s. Cuts of 2m 3s were required. The cuts were Compulsory. Cuts required to sight of women gagging and retching during deep throat fellatio

by Todd Todd
Ava Rose, Charlottle Stokely, Chloey Morgan, Jeanie Marie, Jenna Presley, Jessi Castro, Samantha South, Vanessa Figueroa
10m 23s were required. The cuts were Cuts for Category.
203:19s Cuts required to potentially harmful and abusive activity (gripping throat, choking during fellatio). Cuts required to sexualised urination.

Actually more interesting for what was not cut. The title includes the word 'teen' which was previously banned by the BBFC.

Available uncut from Adult Video Universe

by Brandon Iron Producer(s) Brandon Iron
Melany XXX, Naomi.
213m 30s. Cuts of 0m 24s were required. The cuts were Compulsory. Compulsory cut for R18 required to remove sight of urolagnia (sight of urination during vaginal intercourse and subsequent rubbing of urine on genitalia)

2008 US sex/horror hardcore video by Rob Rotten
With Roxi Devill, Seth Dickens, Jamie Elle, Ruby Knox, Rob Rotten, Eric Swiss, Daisy Tanks, Jack Vegas

Banned by the BBFC in 2008 with the following statement:

The BBFC has rejected the DVD The Texas Vibrator Massacre which means that it cannot be legally supplied anywhere in the UK.

The Texas Vibrator Massacre takes the form of a sex work (that is to say a work whose primary purpose is sexual arousal or stimulation) based loosely upon the notorious 1974 horror film, The Texas Chain Saw Massacre. In the majority of its scenes the work eroticises sexual and sexualised violence to a highly significant degree and, although self-consciously excessive in nature, the conflation throughout of sexually arousing material with credible violence, forced sex and sadistic sexual threat gives rise to a serious and sustained breach of the Board's sexual violence policy. In addition, the scenes of simulated incest between brother and sister are in clear breach of the Board's Guidelines for sex works, which prohibit 'material (including dialogue) likely to encourage an interest in a sexually abusive activity (eg paedophillia, incest, rape)'.

The BBFC’s Guidelines identify as of particular concern 'graphic rape or torture', 'sadistic violence or terrorisation' and 'sex accompanied by non-consensual pain, injury or humiliation'. Furthermore, the Board's 'R18' Guidelines, which apply equally to 'sex works' at '18', state that the following elements are unacceptable: 'the portrayal of any sexual activity which involves lack of consent (whether real or simulated)', 'the infliction of pain or physical harm, real or (in a sexual context) simulated' and 'any sexual threats, humiliation or abuse which does not form part of a clearly consenting role-playing game'.

It is the Board’s carefully considered view that to issue a certificate to this work, even if confined to adults, would be inconsistent with the Board’s Guidelines, would risk potential harm within the terms of the VRA, and would be unacceptable to the public.

Available uncut from Adult Video Universe

by Dion Giarrusso
Angela Crystal,Paris,Lea De Mae
135m 22s. Cuts of 4m 8s were required to potentially harmful and degrading title to sex work, and nine furtheCuts required to scenes of potential harm in a sexual context (in this case the obstruction and/or restriction of oxygen and bloody supply to the brain) 

by Vince Vouyer
Jasmine Lynn,Amee Donavan,Micara
137m 26s. Cuts of 9m 32s were required to remove degrading and dehumanising sexual acts (aggressive deep thrusting into mouth causing gagging, fist forced into woman's mouth), sexual violence (man slapping woman's face and breasts), potentially harmful restricted breathing during sexual activity (woman's nostrils pinched together), abusive dialogue and references to underage sexual activity and asphyxiation.

by David Luger
Kitten,Kiwi,Scarlet
139m 35s. Cuts of 10m 43s were required to title, and sight of woman gagging and being degraded during thrusting fellatio and other harmful / abusive elements throughout the tape.

by David Luger
Eva,Myli,Lola
138m 18s. Cuts of 13m 5s were required to abusive sequences (including sight of women gagging during deep throat fellatio).

by Robbie Fischer,David Luger
Diana,Brooklyn Rose,Mia Star
136m 25s. Cuts of 20m 53s were required to underage sex reference and abusive sequences (including breathing restriction and activity causing significant pain or distress).

Spanking video submitted in 2006 by G&M Fashions
49:32s. Compulsory cuts of 5:50s required to sequences featuring sight of actual harm (sight of welts caused by caning) during SM sex play.

by Seymore Butts
Nikki Anderson, Alisha Klass, Anastasia.
128m 55s. Cuts of 1m 5s were required. The cuts were Compulsory. Company was required to remove sight of urine and urination during sexual activity, to comply with BBFC Guidelines, Policy and the Obscene Publications Act of 1959. An uncut certification was not available.

Not known
Abi Titmuss.
10m 49s. Cuts of 5m 57s were required., some or all of these cuts were substitutions. The cuts were Compulsory. Cuts required to remove material featuring sexual activity for which the distributor could not provide evidence of consent from the participants with regard to its distribution. Cuts made on the grounds that distribution in the UK may constitute a breach of duty of confidence and a breach of the right to private life under the terms of the European Convention on Human Rights.

by Samson
Carly Parker, Haley Paige, Nicki Hunter, Trina Michaels.
146m 22s. Cuts of 2m 47s were required., some or all of these cuts were substitutions. The cuts were Compulsory. Cuts required to remove sight of women gagging and choking during fellatio,

Not known
Not known.
36m 6s. Cuts of 1m 31s were required. The cuts were Compulsory.
A cut was required to sight of welts raised on a man's buttock during whipping.

by Not Known
Not known
239m 39s. Cuts of 0m 52s were required to sight of woman being penetrated with a glass bottle and man inhaling nitrous oxide on grounds of actual and potential harm in a sexual context. Cut to man licking what purports to be urine from the floor.

by Tom Camp's
Not known
75m 19s. Cuts of 7m 25s were required. The cuts were Compulsory. Cuts required to remove physical and verbal abuse of women in two sequences

by Toni Ribas
Asmaret, Corneliah, Katrin, Moonlight, Stella, Andy Brown, Black Diamond, Claudia Ferarri, Choky Ice, Blue Mickey, David Perry, Toni Ribas, Franco Roccaforte, Sheila Scott.
135m 34s. Cuts of 3m 13s were required., some or all of these cuts were substitutions. The cuts were Compulsory. Cuts required to remove abusive and potentially harmful activity (slapping the face of a woman while firmly gripping her around the throat), and to remove urolagnia

by Cindy Martin
Vicki Green, Veronica Winters, Tallulah Banquet, Tina Love, Anita Thrill.
73m 32s. Cuts of 7m 15s were required. The cuts were Compulsory. Compulsory cuts were required to remove sight of obscene and potentially harmful sexual activity (in this case, focus on injury to buttocks and breasts sustained through sado-masochistic activity), as well as images associating sex with violence,

by Kid Tee
Tera Patrick,Micky G,Nacho Vidal
66m 20s. Cuts of 0m 6s were required to degrading title.

by Mark and Tracey (Zuusco)
Submitted in 2007. Running Time 123:24s
Cut by 2:41s. Cuts required to remove sight of apparent urination in conjunction with sexual activity and subsequent smearing of fluid which appears to be urine.

Not known
Tracy Lain, Freddie, Libby.
115m 15s. Cuts of 3m 45s were required. The cuts were Compulsory. Distributor was required to remove references to an incestuous relationship

by Skye Blue; Luc Wylder
Vo Do Balm, Sabrina.
88m 27s. Cuts of 3m 3s were required. The cuts were Compulsory. Cuts are required to remove sight of wax dripping on genitals

by Juliano Ferraz
Not known.
111m 50s. Cuts of 0m 34s were required., some or all of these cuts were substitutions. The cuts were Compulsory. Cuts required for R18 to remove sight of potentially harmful activity (breath restriction) and violence (aggressive face slapping) during scenes of explicit sexual activity

Not known
Not known.
127m 33s. Cuts of 6m 31s were required. The cuts were Compulsory. Cuts required to abusive sexual activity (woman gagging and vomiting during deep throat fellatio) and potentially harmful acts (anal penetration with a stiletto heel and a baseball bat)

by Alex Ladd
Not known
103m 33s. Cuts of 2m 25s were required to remove material showing man with ball gag in mouth on the grounds that it might be harmful to viewers through imitation.

by Gia Darling
Gia Darling,Jessica Jewell,Bruce Hill
85m 54s. Cuts of 0m 4s were required to two images of fisting.

Fetish video (Asphyxiation)
Laryssa Montgiro, Juliana Bella, Laisa Lins, Andressa DeSa
Submitted in 2007. Running time 92:26s
Cuts of 2:36s required to remove all suggestion of non-consensual activity in a scene which, in establishment, presents as a sexual assault. The video was also pre-cut before submission

by Hazza B'Gunne
Jamie Brooks, Steve Hooper, Danny Boy.
127m 15s. Cuts of 0m 14s were required. The cuts were Compulsory. Cut required to sight of woman masturbating in a public UK location, as per BBFC Guidelines and Policy. On re-submission, a further cut was required on the same grounds.

by Rocco Siffredi
Not Known
{126m 14s. Cuts of 0m 29s were required to sight of asphyxiation/throat being squeezed during sex. Abusive and potentially harmful acts are not permitted at any classification for a sex work.

by Bryan Xin
Carmen Hayes, Mandy May, Ester, Alice, Zdenka, Lisa Sparxxx, Reno, Joe Monti, George Uhl, J. J, Rudy, Neeo, Lee Stone.
133m 5s. Cuts of 2m 30s were required., some or all of these cuts were substitutions. The cuts were Compulsory. Distributor was required to make cuts for R18 to scene involving gagging during deep throat fellatio

by Erin Sky
Arianna Jollee, Audrey Hollander, Kami Andrews, Rio Mariah, Nadia Sin.
77m 24s. Cuts of 42m 57s were required., some or all of these cuts were substitutions. The cuts were Compulsory. Cuts required to abusive sequences (gagging during deep throat fellatio, breath restriction) in an explicit sex work

by Paul Thomas
Lyndsey Love, Lacey Love, Bella Starr, Jack Lawrence.
86m 37s. Cuts of 0m 34s were required. The cuts were Compulsory. Cuts required to remove sight of woman gagging and coughing during deep throat fellatio,

by Robby Fischer
Ashley Blue,Jessica,Kristol
139m 15s. Cuts of 0m 10s were required to dialogue reference to underage sex.

by David Luger
135m 22s
Cuts of 0m 54s were required to sight of foot being pressed on woman's face and to the sight of urolagnia

84m 3s. 0m 5s One cut required to sight of abusive activity (gagging during deep throat fellatio).

by Camille and Rick Savage
Not known.
54m 31s. Cuts of 0m 21s were required. The cuts were Compulsory. A cut was required to remove potentially harmful behaviour (in this case breath restriction during 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