Here are some simple tips to reduce damp and mould in your home:

• Maintain a good level of heating within the property and ensure it's warming the house evenly
• place radiator reflector panels behind your radiators
• close curtains or blinds to keep the heat in
• turn off taps whilst brushing your teeth
• pull furniture away from the walls
• keep humidity between 40 - 60% (purchase a hygrometer!)
• cook with saucepan lids on to reduce condensation, close the kitchen door and open a window
• dry clothes outside where you can 
• wipe away condensation around windows
• clean off mould with a spray containing bleach
• paint affected areas with mould-resistant paint
• keep the bathroom door closed while having a bath, or ensure your extractor fan is turned on
• stop condensation forming on windows by rubbing a small spot of washing up liquid over the surface with a cloth. Try this at home or in the car - taxi drivers have been doing this for years
• prevent condensation forming on windows by cutting a potato in half and rubbing it across the window, buffing with a cloth afterwards.