What do secularists believe?

They don’t necessarily believe in anything! Secularism is the detachment from religion as a whole. It is not the same as atheism, which is the belief that there is no God. Secularism instead, is the detachment from any belief at all.

Secularists advocate for a separation between religion and state, meaning they believe that they are two separate entities and should be treated as such. For example, the UK is a secular country, meaning our laws and government do not co-align with religion.