The amount of usable data the team recovered from the Cheddar Man sample was sufficient to produce what researchers described as a near-complete genome — enough coverage across the chromosomes to draw meaningful conclusions about ancestry, population relationships, and, with appropriate caveats, the physical traits that are under genetic control.
The Cheddar Man genome was described in early reporting as the oldest complete British genome to date. This description refers to genome completeness, not to absolute age — the genome is the oldest successfully sequenced from an individual found in Britain, not the oldest human genetic material ever recovered anywhere. Britain has human remains that predate Cheddar Man, including the dramatically older Palaeolithic material from sites like Kent’s Cavern, but comprehensive ancient genome sequencing had not, at the time of the study, been achieved for those specimens.
The sequenced genome allowed the researchers to address two distinct sets of questions. First, ancestry: which population did Cheddar Man belong to, and how does he fit into the broader picture of Mesolithic European populations? Second, phenotype: what does the genetic evidence suggest about his physical appearance?
These are separate questions requiring separate analytical frameworks, and the confidence that researchers can place in the answers differs substantially between them.
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## Ancestry: Where He Came From and Who His People Were
The population genetics analysis of the Cheddar Man genome placed him clearly within a group that ancient DNA researchers call Western Hunter-Gatherers — a population of Mesolithic foragers whose genetic signature has been identified across a wide geographic range of European sites, from Spain and Luxembourg to Hungary and Scandinavia.