Respects Parliamentary Sovereignty
As it gives effect to the precise words used in the Act and allows law to be made by those elected. Judges follow the words rather than attempting to seek the ‘intention of parliament’.
E.g. Whiteley v Chapell, in this case, even though the outcome led to an absurdity, the judges followed the law as it was written by Parliament and restricted their role to applying as opposed to making it.
It also limits the discretion of the judges, who, unlike Parliament, are unelected. This upholds the separation of powers as the judges should not have law making power.