According to a coalition of unlikely allies, including Christians, secularists, comedians, and LGBT activists, you are, and have been since 2014. Back then, the coalition successfully campaigned against the criminalization of insulting speech in section 5 of the Public Order Act 1986, which made it an offence to use "threatening, insulting or abusive" words or behaviour.
A Christian street preacher in Britain has won a case against the West Yorkshire Police Department after police arrested him in 2019 for a “hate-related public order offense.”