Diamond is part of the Admiral Group of insurers (along with sister brands Admiral, Elephant, Bell and Gladiator).
Diamond's car insurance policy is underwritten by AIGL (Admiral Insurance (Gibraltar) Limited), Admiral Insurance Company Limited and Great Lakes Insurance SE.
What does Diamond car insurance cover?
Elements marked with a ✓ are covered as standard, those marked with a ✘ are not covered as standard. Elements marked with a £ can be added to a policy as optional extras for an additional cost.
✓ Courtesy car
Provides the policyholder with a car to use while repairs are carried out on their vehicle as part of a claim
✓ Personal accident
Covers the policyholder and passengers if they are injured in an accident
✓ Stolen keys cover
Covers the cost of replacing keys and locks in the event that your car keys are stolen
✓ Lost keys cover
Covers the cost of replacing keys and locks in the event that your car keys are lost
£ NCD protection
Allows the policyholder to make a specified number of claims over a period without affecting their no claims discount
£ Motor legal protection
Covers legal expenses for legal action you may take as the result of an accident
Does Diamond offer the best car insurance?
Here's how Diamond scored in our latest car insurance survey:
To help you find the best car insurance policy, Which? goes the extra mile to sort the best from the worst.
How we analyse car insurance
We analyse and rate 73 key elements of standard car insurance policies to come up with the overall policy score. We assess how important each individual element is to drivers when choosing and using a car insurance policy, and weight it accordingly when calculating our total policy score.
Initially, we score all of the product elements out of five, reflecting how competitive each provider is in this area compared with other insurers. Weightings are then applied to the higher and lower element scores to enhance / reduce their impact in the overall product score.
Diamond's car insurance policy: is it good or bad?
We've rated hundreds of policy details and picked out the best and worst elements of this cover.
In detail: every part of Diamond's car insurance rated
Table last updated in February 2021. Next update in January 2022.
To see how Diamond's car insurance compares to other policies check out our guide on the best and worst car insurance.
How can you save money on Diamond car insurance?
Diamond's car insurance policy is available on the following price comparison websites:
- Compare the market
- Go Compare
✓ Multi car discount
Offers a multicar policy which includes a multicar discount
✓ Dash cam discount
A discount to the premium for having a dash cam installed in your car
✓ Joint car and home insurance discount
Offers a multicover policy where you are able to cover a car and a home on one policy
✘ Membership discount
A discount for being a member of an organisation
Above information correct as of December 2020
What is Diamond's car insurance claims number?
If you need to make a claim with By Diamond car insurance call 0333 220 2037.
Find out more: is it worth claiming on your car insurance?
Get top money-saving tips from Which?
Sign up to the Which? Money Weekly newsletter to get our latest news, tips and deals straight to your inbox.