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 1 3 0
2018 3 1 2
2019 0 0 0
2020 0 0 0
2021 0 0 0
BT-Strict
2017 0 0 0
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 2 0
2018 2 4 0
2019 0 1 0
2020 0 0 2
2021 0 0 0
OpenDNS
2020 0 0 0
2021 0 0 0
Plusnet
2018 1 1 0
2019 0 0 0
2020 1 0 0
2021 0 0 0
Sky
2017 1 0 0
2018 4 0 0
2019 0 0 0
2020 0 0 0
2021 0 0 0
T-Mobile
2020 0 0 0
TalkTalk
2017 1 7 0
2018 14 12 0
2019 0 2 2
2020 0 0 3
2021 2 0 0
Three
2018 0 0 1
2019 0 0 0
2020 0 0 3
2021 0 0 2
VirginMedia
2017 1 0 0
2018 8 6 0
2019 0 0 0
2020 0 0 0
2021 0 0 1
Vodafone
2018 2 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 15 0
2018 76 107 90 days
2019 157 296 71 days
2020 104 193 50 days
2021 72 131 27 days
BT-Strict
2017 1 0
2018 35 54 90 days
2019 146 275 200 days
2020 101 202 145 days
2021 44 86 23 days
Cloudflare family
2020 17 3
2021 37 0
EE
2018 22 45 108 days
2019 91 176 85 days
2020 54 73 23 days
2021 24 38 3 days
O2
2017 5 0
2018 37 0
2019 75 58 40 days
2020 61 59 10 days
2021 37 28 4 days
OpenDNS
2020 30 130 35 days
2021 33 169 7 days
Plusnet
2018 6 0
2019 62 0
2020 36 0
2021 24 0
Sky
2017 2 0
2018 59 50 106 days
2019 136 168 116 days
2020 68 103 25 days
2021 15 26 24 days
T-Mobile
2020 1 1
TalkTalk
2017 13 0
2018 96 0
2019 182 151 29 days
2020 107 107 9 days
2021 79 3
Three
2018 11 16 97 days
2019 129 200 55 days
2020 75 154 24 days
2021 27 64 9 days
VirginMedia
2017 2 0
2018 46 6 11 days
2019 89 21 59 days
2020 123 0
2021 82 68 6 days
Vodafone
2018 28 17 21 days
2019 111 119 122 days
2020 87 86
2021 47 45

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