Do you have a paint in your range that you can recommend for painting a night storage heater which has yellowish/brown heat marks. Colour white pleas.
Assuming the heater to be painted is previously painted metal, it is clean, dry, sound and prepared as detailed in the technical data sheet you could consider Coo-Var Radiator Enamel.
After each application allow to dry for one hour, then stove with the radiator at full heat (70 deg C) for one hour to ensure drying.