Write a review Your name* Your e-mail* (Not for publication) Rating ★★★★★ Excellent ★★★★☆ Very good ★★★☆☆ Average ★★☆☆☆ Poor ★☆☆☆☆ Terrible Your review * * — Required information Gas Alarm Systems Ltd ← View details 4 Halfpenny Close, Knaresborough, North Yorkshire HG5 0TG, United Kingdom, Knaresborough, England