His work as the first director of Butser Ancient Farm, a working replica of an Iron Age farmstead in Hampshire, made a significant contribution to our understanding of the Iron Age, and to the field of experimental archaeology.

[2] After completing his teaching diploma, Reynolds became the classics master at Prince Henry's Grammar School, Evesham.

[2] In 1972, Reynolds was recruited as the first director of Butser Ancient Farm, an experimental archaeology research site in Hampshire, southern England.

[4] In the 50 years since its establishment, hundreds of experiments have been conducted at Butser, covering a wide range of subjects including the construction of houses, the storage of grain, the keeping of livestock, and the production and use of ancient technologies.

[2] Reynolds was an innovative researcher, who made a major contribution to our understanding of Iron Age life.