Surf edition tide data

Since 10.10 update tide widget has developed issues. I have tide data on watch face. Regularly this now shows 'no data' or 'retrieving data' when Bluetooth connected to phone. Sometimes the widget disappears entirely and is just a blank space on the watch face. Today, it has not updated after low tide to indicate time of high tide. I've restarted watch and issue remains.

UPDATE

Tide time updated to reflect high tide exactly 1 hour after low tide. I am UK and currently BST so I wonder if there's a bug and its incorrectly reading time zone?