Well this is depressing... I'm not sure I've seen independent stats on porn use in the UK before.
"Half the adult population of the UK watched online pornography during the pandemic, according to a projection by Ofcom which lays bare the activities of the 26 million individuals who view adult material.
By far the most popular pornography site was PornHub, which was visited by 50% of all males and 16% of all females in the UK in September 2020 – giving the site a far larger audience than mainstream television channels such as Sky One, ITV4 and BBC News.
The figures rise substantially among younger age groups, with a third of young women and three-quarters of young men visiting PornHub in the four weeks covered by the research."
www.theguardian.com/media/2021/jun/09/half-british-adults-watched-porn-pandemic-ofcom