How do I declare income

Hi guys and gals So we recently sold my uncles house of which I received £42700. During the selling of the estate I have received interest to the sum of £91.51 which is gross income with I have been told will need to be declared. And to be completely honest I am absolutely lost how I do this or where to start and the HMRC has to be one of the most unfriendly website I have ever had the misfortune to use. Any help or advice would be greatly appreciated Kind regards Michael moore

Hi,
Please refer to:
Dealing with the estate of someone who's died
Thank you.