A feminist pornographer has hailed a victory for freedom of expression after she won her appeal against an order that had forced her to take down a sadomasochism fetish website

Pandora Blake, from London, said she believed she was targeted by the Authority for Television on Demand (Atvod) watchdog because she spoke out publicly against rules on porn deemed “harmful to minors”.

Now, after Ofcom ruled that Blake’s website, dreamsofspanking.com, did not fall under Atvod’s remit, she is free to reinstate its content. “Now I’ve won my appeal I feel vindicated,” she said. “The war against intrusive and oppressive state censorship isn’t over but this decision is a landmark victory for feminist porn, diversity and freedom of expression.”

“If you look at [Atvod’s] archive, the sites they were ruling against, a lot of them were run by women,” Blake said. “It did really feel like they were upholding a kind of patriarchal sexuality.”

Atvod, a quango which regulated video-on-demand websites, was stripped of its powers earlier this year. It had been widely criticised for acting against sites outside its remit and, after new rules were introduced in 2014 banning some sex acts in pornography, free speech campaigners also said it disproportionately acted against websites run by women.

Blake had been among those who spoke out publicly against the Audio Visual Media Services regulations (AVMS), which in 2014 banned the depiction of sex acts that were judged morally damaging or life-threatening, including face-sitting, female ejaculation and spanking that leaves marks. She appeared in panel discussions on Newsnight and Women’s Hour opposing the new rules.

She says she was placed under investigation by Atvod soon after. In August 2015, after a five-month inquiry, she was forced to censor her website, which Atvod ruled had breached rules in three areas: a failure to pay regulatory fees, a lack of effective age controls to restrict access to over-18s, and the broadcast of harmful material.

Atvod’s investigation into her work had been traumatic, Blake said. “Making porn was part of an act of self-acceptance for me, to say I’m not ashamed and to reach out to other people who share the same sort of fantasies,” she said. “As a result, the films that I was making did show very honestly the sort of play that I enjoy in real life, it does include quite heavy impact with things like belts and canes – always consensual, but it does leave welts and bruises that might take a few days to heal.”

In a ruling published on Monday, Ofcom decided in favour of dreamsofspanking.com. A spokesperson said: “Ofcom found that the site was not a video-on-demand service and therefore it was not subject to regulation. When regulated video-on-demand services break our rules, we take robust action to protect children.”