Nope, not always and it looks like I might be lucky on this one, the tax code changed due to me no longer having company car and so I was entitled to a refund, I'm no tax expert but fortunately know someone who is, it seems that the Tax code issues was not applied in the correct way, something to do with yearly and monthly and that my earning from my old employer (the one before the TUPE) where not entered into the system making my yearly earning seem to be much less than they actually were. I could not have know this and did not supply the tax office with that information.
I the view of this person who ever incorrectly filled out the forms is responsible and it wasn't me, if it had been the tax man's error I'd have no chance but in this case it looks like I'm not culpable for the cash. Now its just a case of trying to nail down who made the error or it may even come down to which company they were working for at the time.
@Effie, It must be great to have a nice tidy place again, logic would say that you'd look at the mess and clean it up but I find the opposite cab occur, you look at the mess and feel so down about it that you can't find the motivation to sort it out. Tis great you have family to help you out in difficult times, a comfy bolt hole from the world is a valuable thing.