Secularism isn't "having no religion" it is "having any religion you want, but not linking a particular religion to the state or including prayers in public events" There have been calls for secularism - to separate religion and the running of the country.
You missed a long thread where some religious posters thought that would be a backward step leading to the decline of religion and therefore of morals, and some non-religious posters thought it a step forward toward accepting that agnostics and atheists can be as ethical as theists, and that the C of E is not the only fruit.