Here is a summary of the latest NWP output for noon (GMT) on Wednesday.
Issued 0536z, 2nd May 2009.

The Azores High will be close to the UK during the latter half of next week,
but slightly further south than was forecast yesterday. As a result it looks
as though most areas will see strengthening westerlies or WSW'lies and rain
will spread across much of the UK, although southern areas may stay dry.

ECMWF: http://expert.weatheronline.co.uk/da...mwf/ecmwf.html
Moderate WSW'lies cover the UK, with a weak ridge. A trough moves eastwards
on day 6, bringing stronger westerlies and on day 7 strong weesterlies
continue to affect the UK, due to a deep low to the north.

MetO: http://expert.weatheronline.co.uk/da...ukmo/pslv.html
A large high lies to the south and a ridge covers England and Wales. SW'lies
cover teh UK as a result.

GFS: http://expert.weatheronline.co.uk/pslv_frame.htm
SW'lies cover the UK, with a high to the south and a trough to the west.
SW'lies persist on day 6 and on day 7 a col affects England and Wales, with
SW'lies persisting elsewhere.

GEM: http://expert.weatheronline.co.uk/da.../gem/pslv.html
The Canadian run brings a ridge and westerlies.

JMA: http://www.wzkarten.de/pics/Rjma1201.gif
The Japanese run shows westerlies and a weak ridge over the UK.