Eschaton

(Have used approximate numbers) In tax year 20/21 I received a deferred bonus award of £50,000, from which income tax of 40% was subtracted meaning £30,000 was invested into the company’s investment business. This matured during tax year 24/25 after satisfying various conditions where the £30,000 had grown to £45,000 and this was paid out. What tax should I then pay for 24/25 tax year, is it: a) I include this £45,000 on my taxable income for 24/25 but offset it with the £20,000 tax I had paid in 20/21 b) income tax on the £15,000 gain between 20/21 and 24/25 c) Capital gains tax on the £15,000 gain between 20/21 and 24/25 b) I include