Here is a summary of the latest NWP output for noon (GMT) on Saturday.
Issued 0428z, 18/05/10.

The weekend will see a slow transition to slightly cooler conditions as a
northerly or NW'ly flow sets in across the UK on Sunday.

ECMWF: http://www.wzkarten.de/pics/Recm1201.gif
The UK lies under high pressure and light winds. On day 6 NW'lies cover the
UK as the high moves westwards, followed by light winds as a ridge declines
over the UK on day 7.

MetO: http://www.wzkarten.de/pics/Rukm1201.gif
The Met Office run shows NW'lies and a high to the west. Stronger NNW'lies
cover the UK on day 6 as high pressure builds to the WNW.

GFS: http://www.wzkarten.de/pics/Rtavn1201.png
High pressure covers the UK, with light winds for all. On day 6 the high
declines to the NW, leading to northerlies for the UK. There are NE'lies on
day 7, as pressure remains high to the north.

GEM: http://www.wzkarten.de/pics/Rgem1201.gif
The UK lies under NW'lies as the result of a high to the NW.JMA: http://www.wzkarten.de/pics/Rjma1201.gif
JMA brings light winds and a high over the UK.