The loft is well insulated with about 8" of rockwool, except where the loft boards are, where there is about 4" underneath the boards. The soffits were replaced last year with ventilated soffits and I can see light at the edges of the roof when in the loft with the lights off, and the air bricks in the gable walls are clear - free from blockage/obstruction.
What do I need to do to stop the condensation? The only source of warm air I can think of is from the loft hatch which has draught excluder around it as it can't be insulated due to the loft ladder.
Do I need to improve the air flow? If so, how? or are there other things that I need to do?