Below are a number of websites links that you may find useful.

www.gassaferegister.co.uk
www.trustcorgi.com
www.hvca.org.uk
www.trustmark.org.uk
www.bnibrandshatch.com

Boilers

www.vaillant.co.uk
www.worcester-bosch.co.uk
www.viessmann.co.uk

Fires

www.valor.co.uk
www.bfm-europe.co.uk
www.robinson-willey.com
www.burley.co.uk
www.apexchimneysweeps.co.uk

Water Heaters

www.baxipotterton.co.uk
www.chaffoteaux.co.uk

Cookers

www.cannoncooking.co.uk
www.newworldappliances.co.uk
www.bellingappliances.co.uk