Banco Santander posts 4 percent full-year profit rise, Britain drags

By Jesús Aguado and Angus Berwick MADRID (Reuters) - Banco Santander opened Spain's bank reporting season on Wednesday with a 4 percent rise in its 2016 net profit, as improved results in Brazil helped offset a weak performance in Britain. Santander, the euro zone's biggest bank by market value, reported net profit for the full year of 6.2 billion euros (5.3 billion pounds), beating the average of analysts' estimates calculated by Thomson Reuters of 6.12 billion euros. For the fourth quar