Just checked my original contract from 2005 (signed nothing new since) and it states the following:
Remuneration;
You will be paid a salary at the rate of £XXXX net per week payable weekly in arrears.
So I guess that answers that question then.
So effectively the company would get a divvy off the government on MY personal allowance if my pay does stay the same next month. Doesn't sound fair somehow..
Why on earth would you sign an agreement based on NET pay, unless you were sure it would go in your favour?