By Samuel Indyk LONDON (Reuters) – The British pound rose against the euro but was flat against the U.S. dollar on Friday, a day after the Bank of England increased its interest rate for the third consecutive meeting but softened its language over future tightening plans. Against a weakening euro, the pound rose 0.5% to 83.88 pence but was still heading for its second consecutive weekly loss versus the single currency. Sterling was little changed against the dollar at $1.3147 but was still on track for its first positive week in four and its best weekly performance for six weeks. The Bank of E…