In reply to Darkinbad:
The weather on Sunday in the Lakes was a bit weird. Driving up the M6 in the morning visibility was claggy/poor until going up to Shap, from there on it was clear but high level overcast.
Spent the day orienteering (Binsey) and walking north of Skiddaw, all clear, occasionally briefly sunny.
Started driving back eastward about 5:30, that's a bit (i.e. very) dark grey, where's the view gone? Followed by rain, torrential rain and the Pennines and Lakes hills having disappeared on the M6 going south. I reckon south Lakes was probably poor all day but north Lakes ok.
Inevitably going past Preston took a bit longer than normal.