The deadline is TOMORROW!!!!
You know they don't need much excuse to stop paying.
You know the phone lines will be at least half an hours wait.
You know you have to do it. (if you claim tax credits that is!)
It is a necessary evil. For a customs & revenue (or whatever department they are this week) the form is actually easy to complete, particularly if you have your P60 to hand.
So, Just Get On With It.
Settle yourself down with a brew, get your paperwork in front of you and dial them on a phone with a speakerphone facility and one that can either reach the toilet whilst plugged in or that you can wander round with. (you never know when you need to go!)
Just Get On With It!!