i have damp shots on my celling and walls in my bedroom

Do you hang damp washing etc in there, and is there good ventilation.

lack of ventilation, either need vents in roof void or in soffit areas, might be worth checking that the loft insulation is not pushed al the way down to roof eaves as this stops air movement, sometimes if people have had there lofts re-insulated i have come across this problem, hope this helps