Hi Mick,
I use the good old Met Office Inshore Waters Forecast for the official position. If they have a strong wind warning that other sites miss, at least I've been warned! https://www.metoffice.gov.uk/public/weather/marine/inshore-waters-forecast#iw7
For medium/longer range stuff, I've used a German website for many years, and trusted it for my long-range passage planning, as well as planning fishing trips several days in advance. See here: http://www.wetterzentrale.de/en/panels.php?model=gfs&map=1&var=1&lid=OP
It combines temperature (colours) and pressure (isobars). Click any of the 9 windows to expand it to give a detailed chart for the day.
Mike