Here is a summary of the latest NWP output for noon (GMT) on Wednesday.
Issued 0501z, 25th April 2009.

The middle of the week will see a col giving way to southerlies, with
increasingly warm conditions over the UK. Western areas are at risk of rain,
but it'll be largely dry in the east.

ECMWF: http://expert.weatheronline.co.uk/da...mwf/ecmwf.html
A col covers the UK from days 5 to 7.

MetO: http://expert.weatheronline.co.uk/da...ukmo/pslv.html
Weak ridges cover Scotland and the Celtic Sea, with much of the UK undewr a
col. On day 6 a trough moves eastwards, bringing a mixture of southerlies
and SE'lies.

GFS: http://expert.weatheronline.co.uk/pslv_frame.htm
Southerlies cover Scotland and Northern Ireland, due to a trough. Elsewhere
winds are light due to a col. On day 6 a ridge moves over Ireland and
NW'lies affect the UK. By day 7 the ridge crosses England and Wales, with
southerlies for all.

GEM: http://expert.weatheronline.co.uk/da.../gem/pslv.html
The Canadian run brings a weak ridge over the UK and WSW'lies.

JMA: http://www.wzkarten.de/pics/Rjma1201.gif
The Japanese run shows southerlies and a trough to the west.