If a Church of England member has never been baptized, then there are pathways to receive this sacrament. You can only be baptized once.
What happens if a Church of England member is unsure and cannot prove either way whether they were baptized in infancy? Can they be baptized now?
The usual sources of proof - certificate, parish registers - are unavailable or destroyed, and there is no-one living who would be able to recall the original baptism.