Experian Letter Scam? Feeling Worried

Hi, I received a letter purporting to be from Experian. It has an experian logo but no address at top and is addressed to my current address in my maiden name, not used by me for over 40 years.

It states that they recently received an application request for a Statutory Credit Report but due to a technical error they were unable to proceed with the application meaning that authentication documents are required to process my application. It goes on to say under Article 12(6) GDPR they are entitled to request additional proof of an individuals identity and residency prior to releasing the information they hold about the person.

It goes on to say if I have already seen a copy of my Experian report then I can ignore this letter but if I still want a report I need to send the following documents to

Experian, PO BOX 9639, Nottingham, NG80 1AE. This is a different address to the return address on the envelope which also has an official style stamp on it (not a post office stamp). That address is PO BOX 8000, Nottingham, NG80 7WF

The documents required are as follows.
Two original documents dated within the last three months from current address such as Bank Statement, Utility Bills, Mortgage Statements, Council Tax, Credit Card, Mobile Phone etc. Photocopies and faxes cannot be accepted.
AND
Photocopy of Passport, birth certificate or full driving licence.

The letter suggests I make a number of the reference number at top of the letter to be quoted in any further correspondence and it's finished with Yours sincerely, Customer Service although no signature or any other information etc.

My first reaction to this is that it is a scam. I did apply for a Credit report last year as I was going through a DRO and I got everything I needed at that time and have no need or indeed have not applied for anything since early last year. I'm also alarmed due to the fact it used my maiden name which I have not used for over 40 years and I have never had any kind of credit using that name, not even a bank account.

I noticed another thread, now closed asking a similar question to mine regarding possible scam letter to said company although the address was 'Customer Support Centre, Experian Limited, PO BOX 9000, Nottingham NG80 7WP', a little different to the one I have received.

Is it possible this is a scam letter? Has anyone else had or know of something like this and if so what have you done about it?

Having gone through the trauma of a DRO last year and trying to get myself back on track this has scared me somewhat. I would really appreciate some advice.

Many thanks

Boo Silva