[Organisation name and correspondence address]
[Date]
[Recipient name and address]

Subject: Acknowledgement of your letter — [reference]

Dear [name],

We acknowledge receipt on [date] of your [letter/document] dated [document date] concerning [subject].

Our reference for this matter is [reference]. Please include it in future correspondence.

The material has been passed to [responsible team or role] for review. This acknowledgement confirms receipt of the listed item; it does not confirm the outcome of that review.

The next step is [action]. We [expect to respond by date/will confirm the response timetable after initial review].

If you need to send further relevant information, please use [appropriate contact route] and quote the reference above.

Yours sincerely,
[Name]
[Role and organisation]