Michael John Dyson

SIG Energy Management Ltd. supplies insulation, exteriors, interiors and specialist construction products. It offers solar PV and solar thermal products. The company is headquartered in Chapeltown, the United Kingdom.

The Cavity Insulation Guarantee Agency Ltd. was founded in 1995 and is based in Leighton Buzzard, UK. The British company provides information and guidance on cavity wall insulation systems, as well as a guarantee generator, news, updates, best practice guides, technical notes, and training for its members. The non-profit company also offers a register of ciga registered installers and remediation contractors. Additionally, the company provides consumer advice and a complaints process, as well as information on the benefits of insulation.