But he says the slightly unusual thing about literally is its meaning has not evolved slowly, with a slight shift, but the precise meaning has been reversed.
Liddy is stepping down in January (he will remain as chairman), to be succeeded as chief executive by kindred spirit Wilson, meaning any large strategic shift is unlikely.
But the British Medical Association warns doctors can spend longer at the hospital site because of the way their shift patterns are designed, meaning they might not get the rest they need before going back on to the wards.