How does banks detect a change in tax residency?

[blockchain4ever]

If my UK company with existing bank accounts becomes treaty non-resident, how will the banks know?

 

[Sols]

For UK companies, it's pretty easy. It's tax resident by virtue of being incorporated in‌ the UK. It might also be tax resident somewhere else (wherever you live), but it‍ never ceases to be tax resident in the UK.

 

[blockchain4ever]

If it is tax resident in another country due to the tie-breaker clause in the‌ DTA, then the status is "treaty non-resident". So it is non-resident for tax purposes. INTM120070 - International Manual - HMRC internal manual - GOV.UK

My question is: how does a‍ bank know if this is the status of a company?