Tax on bought shares ESOP 23/24

Hello, I am a UK tax resident. In 2023 I exercised my employee (ESOP) stock options after leaving my UK company. It's not on payroll. This is a private company. I could not sell the shares and receive any capital gains. The shares are just kept by the employer trust in Jersey on my behalf. I bought them at a discount. The exercise price was less than the valuation. Do I need to pay a tax 23/24 or I can wait until I sell the shares? If so what is the right section to report it in my 23/24 online self-assessment form? Thank you.

Hi,
You will have to wait until they are disposed of before you can calculate if a gain arising.
Thankyou.