Below is the hyperlink to the BBC Tide Timetable. It gives a really good and easily useable guide to the tide times around the region.
Also below is the link to the BBC Weather page for the South West, more detailed weather is available by filling in the seach window on the right side of the page.
Finally you will also find the BBC Coastal Observation Centre, this provides observations from UK ports and inland waterway harbours.
BBC Tide Timetable