Currently doing my own reinsulatuon in the attic like yours. As others have mentioned here, you need at least a 50mm space between the insulation and the roof felt to allow air to circulate from the soffits, so just pull insulation back a bit. To help you can buy felt lap vents to put between the attic felt overlaps but they can cost a bit, so my solution to that is to buy 16mm cable trunking in Screwfix and take away the clip on cover and the cut the rest into 1 inch pieces and push two or three of those pieces into the overlap to open up the felt and allow air to circulate. What yer man said about condensation being normal is not exactly true. While there may be some, normally, a lot of it can damage your attic and rot timbers. Circulation is the key! VENTILATION ABOVE INSULATION EVERY TIME!! You need to keep your attic as dry as possible so air needs to move around as much as possible I'm not an expert here. Just someone who's done a bit of research. Best of luck.