Two forms of sexual expression, both states using the same logic in terms of reasons for legislating against them, namely "Protect the children". Both with social stigma and negative attitudes from the most ardent conservatives of the population.
Though in Russia the bigotry extends a little deeper in terms of social acceptance (or lack thereof), i.e. violence against porn watchers is pretty much non-existent in the UK. But in terms of the law, what is to be codified into law is very similar.
/endrant
Feel free to debate and correct my naive interpretation if you disagree.