Dear Faldage,
Well....yeah, I guess you're right, I didn't make a considered choice of direction there, I subconsiously assumed that because the Channel, the North Sea and the Baltic are just a little adjunct off the Atlantic, they would be fed from the European Atlantic coast tide. I am happy to accept that the effect works east to west, but the double tide is still the result - if the reason I was given is correct. I will try and check on which way the tide moves in the Channel - as said I am not an expert, or even knowledgable, on the theory!

dxb