GFS 0.25 looks ok but Aperge skirts the S Coast.
It’s still too early to call Sunday and I’d wait until later tomorrow for clarity. These runners are fickle things.
Yes, the models keep picking up, adjusting and dropping various disturbances. But the WRF model has picked up on two troughs moving through parts of the country on Sunday afternoon and then again overnight.
Here's the mid-afternoon snapshot:
Then again later, here at midnight:
ICON 06z shows something similar but with slightly different timing and a less organised feature overnight.
Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E