The same could be said about the British way of pronouncing "aluminum" (ah-LOO-mih-num). They pronounce it "al-u-MIN-ee-um". Where does the "ee" sound come from?
As an aside, I have tremendous respect for what the British Empire once was, but sadly, these days there is less and less to admire and respect. They need a Trump of their own, a modern day Thatcher, badly.