Write a review Your name* Your e-mail* (Not for publication) Rating ★★★★★ Excellent ★★★★☆ Very good ★★★☆☆ Average ★★☆☆☆ Poor ★☆☆☆☆ Terrible Your review * * — Required information Sigma Engineering ← View details Brickfield Industrial Estate, Gillingham, Dorset SP8 4LT, United Kingdom, Pottery Sidings, England