As Maggi said she would have preferred it in Iron (the Iron Lady), but Bronze is OK but she hopes this time it retains it's head (seeing that the last one was knocked off).
With this in mind perhaps if they did do one of Blair, then it might give someone a chance to knock that silly grin off his face.
Bronze can be melted or broken off with a hammer and chisel .... but lets hope it never happens. It would be a shame to see another Thatcher statue decapitated especially since she seems so attached to it.