I had a letter from my pension provider stating that they had been paying 'an element' of my firefighters pension as tax free, an injury allowance, dating back to 2007. The FFP is complex but all injury allowances are legally tax free. At the moment the provider will not elaborate and is in discussion as to how much I will have to pay. It could be over £2k. I know I am up to date on the normal side of my pension so it must be somewhere in the injury element. They say it only came to light as I am approaching 65 which brings about a slight change. If the revenue say they want the tax can I make a full claim against the provider for a nine year cock up. I know there is a provision to ask HMRC to do just that.