Convinced now that the blocking high over central & eastern Europe is having a big effect on our bad spell of weather. I would say in summer it has a bigger effect than the Greenland high? Just looked at Bolty's historical vid of 1990 , and it shows on the models ,to the east more lows and also that they are on the cooler side of the high. For some reason the Azores high struggles to build strongly over the western and northern parts, or join up.
Will keep looking at the models for the blocking high to weaken, although I think summer will be pretty much over by then.