Reporting CGT loss

Hi, I made an £18,000 loss in 2014/15, which i reported in my tax return for that year as "losses available to be carried forward to later years". I have not used the loss since. However, I have not made reference to these losses in any of my tax returns since that year. Are my losses available to offset against gains in this tax year (24/25)? Thank you.,

Hi,
If you notified HMRC at the time, or within 4 years of arising, then yes. 
You can telephone 0300 200 3310 to check we have the details or use other contact options here: Self Assessment: general enquiries
Thank you