Here is a summary of the latest NWP output for noon (GMT) on Saturday.
Issued 0505z, 28h April 2009.

The weekend will be largely settled for England and Wales with high pressure
nearby. Further north and west it's looking less settled and the rain is
likely to spread eastwards early next week.

ECMWF: http://expert.weatheronline.co.uk/da...mwf/ecmwf.html
High pressure lies to the south, leading to WSW'lies for all. The high
drifts northwards on day 6, leading to light WSW'lies for all areas except
northern Scotland, which lies under much stronger WSW'lies. A weak trough
moves eastwards on day 7, with westerlies and WSW'lies.

MetO: http://expert.weatheronline.co.uk/da...ukmo/pslv.html
Unavailable today.

GFS: http://expert.weatheronline.co.uk/pslv_frame.htm
A ridge covers England and Wales, with southerlies from a trough elsewhere.
Scotland and Northern Ireland lie under SSW'lies on day 6, with a ridge
persisting over England and Wales. By day 7 a trough moves in from the west,
with stronger westerlies for all.

GEM: http://expert.weatheronline.co.uk/da.../gem/pslv.html
The Canadian run brings a ridge over England and Wales with SSW'lies
elsewhere.

JMA: http://www.wzkarten.de/pics/Rjma1201.gif
The Japanese run shows SSW'lies for all, with a trough to the west and a
ridge to the east.