Alternative voting?

Our Kingdom blog reports that the UK may be moving to the Alternative Vote for Westminster elections. The more observant amongst you will notice this is STV for a single seat, which we used in Northern Ireland quite recently.

If it had have been used at the last Westminster election, theres a fair chance David Burnside and perhaps even David Trimble would have held their seats. It would also probably make Fermanagh and South Tyrone impossible for a Unionist to win.