Nick – I believe the statues would have already been removed by the time of the English Civil War, probably during the reign of Edward VI. It was the stained glass in particular that Lord Fernando Fairfax saved. There are statues on the facades of other English medieval Cathedrals notably the West façade of Exeter Cathedral.
All removed during the Reformation Henry VIII / Ed V! / Eliz I and during the Commonwealth Puritans / Cromwell. As prohibited by the Ten Commandments “no craven images” which is why there are none in Mosques and synagogues. Thought to be idolatry Heads and hands removed so couldn’t later identify and generally broken up.