ITW Alpine - www.itwalpine.co.uk
UK Timber Frame Association - www.timber-frame.org
TRADA (Timber Research and Development Association) - www.trada.co.uk
Irish Timber Frame Manufacturers' Association (ITFMA) - www.itfma.ie
NASC (National Access and Scaffolding Confederation) - www.nasc.org.uk
Frogmore Consulting (Customer Feedback Surveys) - www.frogmoreconsulting.co.uk
