Reporting a CGT loss on ESPP

My company ESPP offered shares at a 15% discount to present or retrospective market value 6 months earlier - whichever was lowest. At the time of purchase, I paid income tax and NI on the difference between the actual price paid and the current market value. Purchases were made between Feb 2019 and Aug 2022. All shares had to be sold at a loss in Jan 2023 when I exited the company. Can I include taxes paid when calculate the total costs of acquiring the shares?

Hi Taxwealthand&consuptionNotincome,
No this is not an allowable deduction.
Thank you.