Referral gift received in USD

In 2023/24, my family member was given USD200 cash in his USD interest bearing account with a broker firm, being gift for referring me to open account with the firm a year ago. He only made one referral. He will report this one off receipt in his self assessment under 'Interest and Other Income from Overseas Savings', converted to GBP using monthly average exchange rate in the month of receipt, together with the interest income and income received from US Treasury Bills held to maturity in that account. Please advise whether the treatment is correct or not.

Hi,

That is correct.

Thank you.