Complaints Policy

If you have a complaint, please let us know

At Diamond Bank (UK) Plc we aim to provide great products and excellent service to our customers. However, we know that sometimes things can go wrong and that you may have cause to complain. If you have a complaint, then please let us know as soon as possible.

We will do our very best to resolve your complaint as soon as you get in touch with us. However, there may be occasions when it will take longer to respond to your complaint. If this happens we will send you an acknowledgement within 5 business days. This acknowledgement will include the name and contact details of the person handling your complaint, this may not be the same person who received your complaint.

If we are unable to resolve your complaint immediately, we will do our best to resolve your complaint within four weeks. If more time is required to resolve your complaint, we will keep you informed every step of the way. A final response will be sent to you within eight weeks of your original complaint.

How to make a complaint

If you have a complaint, we would like to be able to resolve this for you as soon as possible.

Write to us:

You can email your relationship manager directly (if you have one).

You can email your complaint directly to [email protected]

You can write to us at:

Diamond Bank (UK) Plc
36 – 38 Leadenhall Street

In order for us to resolve your complaint as quickly as possible, please include the following information in your email or letter:

  • Your account details

  • As much information about the complaint that you feel able to give

  • Whether there are any actions that you would like us to take to resolve your complaint

By phone:

You can make a complaint directly to your relationship manager (if you have one) or you can call our UK office on +44 (0)20 71584 4100 Monday to Friday 9am to 5pm (excluding bank holidays).

The Financial Ombudsman Service may be able to consider a dispute with us if you meet their eligibility criteria. For further information, please see