I'm about to click 'buy' on one of their harbour (breton) tops.
How generous are their tops?
Should I size up or down?
I like my tops to be fairly fitting (but not tight).
As an example, I'm a 10 in M & S, but a 12 in some other shops 
I recently bought a top from Fatface in a size 10 and it's massive. Even though I'm a standard 12 on top.
We don't have a Joules where I live in the arse end of back of beyond and back so I can't try on first.
thanks 