Here is a summary of the latest NWP output for noon (GMT) on Wednesday.
Issued 0620z, 29th August 2009.

The middle of next week will see low pressure to the NW and strong SW'lies
across the UK. A trough will bring rain across the UK, lightest in the SE,
followed by showery westerlies as the weekend approaches.

ECMWF: http://www.wzkarten.de/pics/Recm1201.gif
Complex low pressure lies to the west, resulting in southerlies over the UK.
The lows merge and move NE'wards on day 6, with strong SSW'lies across the
UK. On day 7 the low moves away to the NE, leaving westerlies over the UK.

MetO: http://www.wzkarten.de/pics/Rukm1201.gif
The UK lies under southerlies due to a low to the WNW. SW'lies cover the UK
on day 6 as low pressure fills to the NW.

GFS: http://www.wzkarten.de/pics/Rtavn1201.png
A trough covers the UK, with strong southerlies in advance and strong
SW'lies following behind. Another trough moves over Ireland on day 6, with
strong SSW'lies across the UK. By day 7 a weak ridge brings westerlies for
all.

GEM: http://www.wzkarten.de/pics/Rgem1201.gif
The Canadian run brings a weak ridge and SW'lies, ahead of a trough to the
west.

JMA: http://www.wzkarten.de/pics/Rjma1201.gif
The Japanese run is unavailable today.