Who was the first British martyr?

The first British martyr is often considered to be Saint Alban, who lived in the 3rd or 4th century. According to legend, he was a pagan who converted to Christianity and was executed for sheltering a Christian priest named Amphibalus. Alban's martyrdom is commemorated on June 22, and he is venerated as the patron saint of London and the first martyr of Britain. His story highlights the early struggles of Christians in the Roman Empire.