On the borders going North-South a line of trained blackberries, or raspberry hedge, is a possibility. They leaf up in the growing season giving protection, but block much less light/wind in the cold months.
Last year got a phone call saying vandals had been in and stomped all over the broad bean bed... it was indeed flattened, but it was a strong westerly that had done the rampaging. A lot of string and some canes saved the day, and we did get a crop. One of our most memorable beginners' mistakes, that one! :-[