"Peter" wrote in message
...
A number of websites, including the UK MO, have these but the update
frequency is low, say 1 every 12 hours.

I also use a prepay aviation weather service which gets the MO chart
every 6 hours.


Just wondering if you're already using the MetO aviation briefing service as
that has an hourly British Isles chart (under synoptic analysis). In terms
of a free chart try http://www.xcweather.co.uk/ and click on pressure.

Jon.