It's essential to use the correct primers and undercoats to allow paint to do its job properly.
Little Greene make two versions of a combined primer and undercoat: a high quality oil based version (the traditional choice) and a quick-drying water based alternative. Both are available in the full range of colours meaning you can achieve great depth of accurate colour in fewer coats.
Aluminium Wood Primer is an excellent, aluminium-based primer for preparing bare hard or softwood, even if resinous.
Wall Primer Sealer is the recommended primer for plaster and rendered walls, even if patchy or friable.