Tax on interest

We recently sold our main house and there was a 2 month period before our new purchase went through, during this time we earnt interest on monies in the bank.do qe need to declare this interest ?

Hi,
Please see the link below. This should allow you to determine if you need to declare interest and/or pay the tax on it.
Tax on savings interest: How much tax you pay - GOV.UK (www.gov.uk)
Thank you