I'm not an accountant, but this forum has been helpful previously.
In 2008 I sold a property where I made a loss of £14,000. My accountant at the time said that there was nothing I could set it against, but it would be available indefinitely to set against any gains in the future. I no longer use the particular accountant, and have no official tax return paperwork to confirm that the loss was made, and that it was registered with HMRC. I dont really know how it works, but hope to be able to get up to date.
Before taking some advice, I like to have an idea of the answer, so I am wondering if a Capital Loss is actually reported to, and recorded by, HMRC at the time, or do I just get to use it when a gain arises, perhaps being required to prove entitlement at the time. The purchase price in 2005 and the selling price in 2008 are a matter of record, so it wont be too difficult to show the figures.
The reason I am asking now is that I made a small gain in June 2019 and, whilst the tax liability is only a few hundred pounds, it would be better in my pocket than in HMRCs, if possible.