Spectromat Sounds like an early call of a stuck summer pattern. 5-wave patterns can be stubborn to shift in summer, and just need to be wary here of us getting stuck in a trough if the high pressure is too far to the west when the music stops, as it were!
The models are currently very keen now for the high pressure over the next week to move west towards the end of the month.
Nothing warm in the outlook whatsoever at the moment, a welcome break from the rain over the next week or so, but it could all head wrong again after that. Ho hum!