How will I be taxed?

Hello, My employer awards me some shares each year in September. Last year was the first occurrence; I sold them immediately, and the tax was deducted. All good. This year I have been assigned a new tax code which takes account of the total I earned last year from salary and sale of the shares. I am a bit worried that in 2023-24 I will be paying tax monthly pro rata based on this value. It's worrying because I think this will reduce my monthly pay significantly (it's a very generous quantity of shares), I would really prefer to pay the tax due to the shares sale once I've actually received and sold them in September. Is this possible? Best Regards, 

Hi Chris Harvey,

Your code would be based on your salary and not the sale of the shares.
You would be better to telephone to have this checked on 0300 200 3300.

Thank you.