Ukhk C

Hi, I opened a 2 year fixed rate cash ISA with Bank A in May 2023 and made a deposit (an amount below the ISA allowance). A few months later, I wanted to switch to a new provider so I opened another fixed rate cash ISA (1 year) with Bank B in Oct 2023 and requested them to arrange the transfer with Bank A. I made a deposit (not much) into the new ISA account while waiting for their response on the transfer because I expected it would be completed shortly. Unfortunately Bank B informed me that the transfer was not successful. At that time I was not aware that I could not subscribe to two cash ISA in the same tax year so I kept both of them. My ISA account with Bank B just matured last month whereas my ISA with Bank A will mature next year. My question is: Do I have to inform HMRC about the interest I have earned from ISA with Bank B when I file my tax return for 2023-2024? Please advise. Thanks.