Here is a summary of the latest NWP output for noon (GMT) on Saturday.
Issued 0403z, 3/07/12.

The weekend still looks like seeing widespread showers or longer spells of
rain due to nearby low pressure. Into next week the low will move slowly
away to the NE, allowing a spell of winds from a northerly quarter to affect
the UK.

ECMWF: http://www.wetterzentrale.de/pics/Recm1201.gif
Days 5 and 6 show low pressure over the UK. The low moves away NE'wards on
day 7, with northerlies as a result. A ridge builds over Scotland on day 8
and it moves southwards on day 9. Winds are light for all, but by day 10
stronger WSW'lies cover the UK as low pressure deepens to the north.

MetO: http://www.wetterzentrale.de/pics/Rukm1201.gif
The MetO run shows a low over England and Wales with NE'lies elsewhere. The
low moves NE'wards on day 6, allowing northerlies to affect most areas.

GFS: http://www.wetterzentrale.de/pics/Rtavn1201.png
Low pressure covers Ireland, with southerlies for much of the UK as a
result. The low fills over Wales on day 6, leading to light winds for all.
On day 7 the low deepens to the NE and a trough covers the UK. Winds remain
light, but on day 8 northerlies pick up as a trough moves SE'wards over the
UK. There are NW'lies on days 9 and 10 as a ridge builds to the west.

GEM: http://www.wetterzentrale.de/pics/Rgem1201.gif
GEM has a low over the North Sea. Scotland lies under NE'lies, with WSW'lies
elsewhere.

JMA: http://www.wetterzentrale.de/pics/Rjma1201.gif
Southerlies cover England and Wales with NE'lies elsewhere, all due to a low
over the Celtic Sea.