Unit Four Plus Two was a British pop band formed in the 1960s, known for their fusion of rock, pop, and folk influences. The band consisted of notable members like Tommy Moeller and Peter Moules, who contributed to their signature sound. Their most significant hit, "Concrete and Clay", reached number one on the UK Singles Chart in 1965, showcasing their strong melodic sensibility and deft use of acoustic guitar. Despite their relatively short career, Unit Four Plus Two made a distinctive mark on the British pop scene of the mid-1960s.