So I came across this advert on the London Underground. I'm in disbelief over how it quite directly claims that sexist hate crime against men is non-existent, that it's always the male's fault. They could have easily put up an ad recognising sexist crime against women without pretending it doesn't happen in the opposite direction.

This claim that sexist hate towards men doesn't exist is toxic, discriminatory and undermines men's rights. What can I do about it - e.g. what would be the best men's rights organisation I could contact in the UK in support of a complaint to TfL and the ASA?

This is totally unacceptable.