Which HMRC office?

What could be really helpful nowadays would be a note (on HMRC’s ‘Online Services’ pages) of the name and address of the HMRC office that has the main responsibility for dealing with the affairs of each of their separate (individual) customers.

I am specifically referring to the pages of ‘Your current client’ and ‘Payments/credits received’ in respect of a client.

An individual client – or perhaps I should more correctly say ex-client – has recently notified me that he has been dealing with his own tax affairs for a little over a year but neither I nor HMRC have previously been made aware of this.

I now want to write to HMRC to confirm that we are no longer acting but after all this time to which office should the correspondence be sent?

I have just highlighted one circumstance where this useful piece of basic data would...