Effective from 1st February 2018
AKW: Various
Alpha Boilers: Various
Altecnic: 3-8%
Arctic Hayes: 5.0%
Everbuild: Various
Geocel/Dow Corning: 3.6%
Inta: 3-6%
Intergas: 2.5-4%
Just Trays: 6.7%
Oso Hotwater: 5-7%
Polypipe: 6.5%
RAK Ceramics: 5.0%
Redring: 5.0%
Uponor: 7.0%
Viessmann Boilers: 4.9%
Worcester Boilers: 5.0%
Xpelair: 3.0%