Skip to content

Where to send your Diamond Car Insurance cancellation letter

Read the addresses on this page next to the full guide to cancelling Diamond Car Insurance.

The addresses we hold

One place for Diamond Car Insurance's mailing addresses: the Cardiff delivery point for a cancellation letter first, then the rest of what the database holds, with envelope wording that matches.

Where the letter goesMailing address

Diamond Car InsuranceDavid StreetCF10 2EE CardiffUnited Kingdom

The United Kingdom address on file for Diamond Car Insurance. Postal code CF10 2EE.

How to address the envelope

  1. Use the address letter for letter

    Write out David Street, CF10 2EE Cardiff, United Kingdom as shown above, including the CF10 2EE postal code, exactly as printed.

  2. Add the return address

    Top-left, your own name and address. A return address is what the post office needs to send the letter back if Diamond Car Insurance has moved.

  3. Send it by certified mail

    Take the letter to a post office counter and ask for certified mail: you get a postmarked receipt and a delivery record. Keep the tracking number and check it until it shows delivered.

  4. Keep the records

    Hold on to the letter copy, the receipt and the tracking page.

Your letter to Diamond Car Insurance

The letter below asks Diamond Car Insurance to end the account, stop further charges and confirm in writing. Put the policy number, the registration number of the vehicle and the date you want cover to end in the bracketed places.

Sample cancellation letter

[Your name] [Your street address] [City, State ZIP] [Your email address]

[Date]

Diamond Car Insurance David Street CF10 2EE Cardiff United Kingdom

To whom it may concern,

I am cancelling my account with Diamond Car Insurance, account or member number [number], with effect from [date or "immediately"]. Please end every add-on and linked plan on this account at the same time.

Please stop all future charges to my payment method, remove my stored payment details, and send written confirmation of the cancellation and its effective date to [your email address].

Sincerely, [Signature] [Your printed name]

Let Postbye cancel Diamond Car Insurance for you

We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.

Cancel Diamond Car Insurance