I said a few days ago, in another AnswerBank thread on the Scottish referendum, that if the "other election" - meaning the one due next May - came up with the 'right' result, we could all expect to see the lowering of the voting age in UK elections to be policy. So it seems to have transpired.
Of course, some 16/17-year-olds have no interest in politics, but there are multitudes of others who do, as evidenced in Scotland. Given the other facts applicable to reaching 16, it seems odd to deprive the latter of an opportunity to participate in matters which affect them.