Why does the wind always come from where we are going. SW on the way to Vannes, NE on the way back?

I just bought: 'Circle Line: Around London in a Small Boat' by Steffan Meyric Hughes via @amazonuk amazon.co.uk/dp/1849532931/r…

either OK with me: whichever you prefer @avenueofyourchoice

Am I trending?

Not sure how this works so this is a random tweet to see what it looks like!

wondering why I've signed uo to something else which will stop me workng