Non-taxpayer - how do I find my tax office?

feijoa

This query has been generated by a "cheery" article on what to do regarding tax and income matters after a spouse's death. I am in my 70s and have been a non-taxpayer for many years. Husband - still hale and hearty - is in his 80s and is a basic-rate taxpayer.
I have registered to receive savings interest gross on my savings accounts, as well as having a cash ISA. My husband has a cash ISA - the remainder of our savings is in my name.
He receives the full State Pension and has two private pensions, one military, the other local government. I will be entitled to a widow's pension from these private pensions, should he predecease me. Apart from savings interest, my only other income is from the State Pension, based on my husband's contributions as I did not work long enough to earn a pension on my own contributions. Thus my total income is currently below the tax threshold. Do non-taxpayers have a tax office - and if so, how is it decided? Will it be determined by where I am domiciled - Scotland - or by where my husband's pensions are paid - or by something completely different?
I have searched for answers on the HMRC website but have found nothing. Feeling rather stupid - as this is something I should surely know....

xylophone

If your husband pre deceases you so that you have a claim on his pensions, you may well find that the tax office that deals with his affairs will also deal with yours.

Otherwise you would contact HMRC using the general address for income tax queries.

https://www.gov.uk/government/organisations/hm-revenue-customs/contact/income-tax-enquiries-for-individuals-pensioners-and-employees