A transparency campaign from

Internet Filtering Statistics

Not only adult content is being blocked

The domains in these categories were identified by keyword searches and then double-checked by hand to ensure the categorisation was accurate.

Sites relating to keywords related to Number of blocked domains identified Number of domains still blocked Current ISP blocks
Addiction, substance abuse support sites 185 91 287
Charities and non-profit organisations 98 17 24
Counselling, support, and mental health 112 77 191
Domestic violence and sexual abuse support 59 14 42
LGBTQ+ sites 114 39 121
School websites 161 23 52

The domains in these categories were identified by keyword searches.

Sites relating to keywords related to Number of blocked domains identified through search Number of domains still blocked Current ISP blocks
Building and building supplies 58 23 54
CBD oils, CBD-related, and hemp products 112 91 505
Drainage and drain unblocking services 99 2 2
Photography sites 1372 513 1340
Religious (Christian) sites 37 8 19
Weddings and wedding photographers 4012 1480 3152
VPN sites 23 15 55

All kinds of sites are reported as blocked

In March 2019, we looked at all the domains that people had reported to an ISP through Blocked as an incorrect block. We categorised all the domains.

Category for Submitted Reports Number of reported domains Number of domains unblocked after reporting
Counselling, Support, and Mental Health 122 98
Charity and non-profit 68 55
Advice Sites (Drugs, Alcohol, Abuse) 52 44
Music 50 41
Weddings and Wedding Photographers 44 40
Tech, IT and Software 41 21
Adult, Pornography, and Escort Services 40 1
LGBTQ+ 40 27
Alcohol-related (non-sales) sites 36 8
Sport and leisure 35 30
Arts, Crafts, and Sculpture 32 24
Builders and Building Supplies 32 27
Household, household repairs and DIY 32 32
Health 25 19
Alcohol 23 4
View all ...

ISP Responses to reports

Network/Year Unresolved non-policy block count Unresolved policy block count Resolved & blocked against policy
BT
2017 0 0 0
2018 0 0 2
2019 0 0 0
2020 0 0 0
2021 0 0 0
BT-Strict
2018 0 0 0
2019 0 0 0
2020 0 0 0
2021 0 0 0
Cloudflare family
2020 0 0 0
2021 0 0 0
EE
2018 0 0 0
2019 0 0 0
2020 0 0 0
2021 0 0 0
O2
2017 0 0 0
2018 0 0 0
2019 0 0 0
2020 0 0 2
2021 0 0 0
OpenDNS
2020 0 0 0
2021 0 0 0
Plusnet
2019 0 0 0
2020 0 0 0
2021 0 0 0
Sky
2018 0 0 0
2019 0 0 0
2020 0 0 0
2021 0 0 0
T-Mobile
2020 0 0 0
TalkTalk
2017 0 0 0
2018 0 1 0
2019 0 0 2
2020 0 0 3
2021 0 0 0
Three
2018 0 0 1
2019 0 0 0
2020 0 0 3
2021 0 0 2
VirginMedia
2018 0 0 0
2019 0 0 1
2020 0 0 0
2021 0 0 1
Vodafone
2018 0 0 0
2019 0 0 0
2020 0 0 0
2021 0 0 0

Reply stats by ISP

Network/Year Reports Sent Total replies received Avg reply interval
BT
2017 2 0
2018 51 99 91 days
2019 144 272 73 days
2020 103 191 56 days
2021 96 169 24 days
BT-Strict
2018 28 49 90 days
2019 142 268 207 days
2020 101 202 178 days
2021 64 119 22 days
Cloudflare family
2020 17 3
2021 55 0
EE
2018 18 38 108 days
2019 85 165 81 days
2020 53 71 35 days
2021 28 48 6 days
O2
2017 3 0
2018 5 0
2019 60 56 41 days
2020 60 58 8 days
2021 45 36 8 days
OpenDNS
2020 30 130 34 days
2021 35 172 6 days
Plusnet
2019 53 0
2020 35 0
2021 27 0
Sky
2018 29 46 106 days
2019 121 150 118 days
2020 67 102 28 days
2021 24 41 18 days
T-Mobile
2020 1 1
TalkTalk
2017 3 0
2018 18 0
2019 151 128 38 days
2020 106 105 20 days
2021 100 10
Three
2018 11 16 97 days
2019 121 191 64 days
2020 74 152 22 days
2021 32 71 8 days
VirginMedia
2018 9 6 11 days
2019 77 20 56 days
2020 122 0
2021 102 88 8 days
Vodafone
2018 4 4 21 days
2019 90 98 85 days
2020 86 85
2021 55 51

Alexa top 100,000 sites

Blocked sites as a proportion of total sites checked

ISP Blocks by top-level domain

.AC.UK domain

.CO.UK domain

.COM domain

.ME.UK domain

.ORG domain

.ORG.UK domain

.UK domain

Misc UK domains