21 Casino Online UK Casino Review & Bonus

We wanted to find the best online casino welcome bonus offer in the United Kingdom. We tested all 133 UK online casinos using each casino’s wagering requirements to see what a first-depositing player could expect to see from a £100 deposit. 21 Casino UK’s results from our bonus test are below.

21 Casino Casino ranked near the top of the list in our first deposit bonus test for the United Kingdom online casinos. With an average bonus value of £9.41 for a £100 first deposit, 21 Casino UK was [ABV100 divided by ABV100-AVERAGE]x better than the state average. An ABV100 value of £9.41 was good for 15th place out of the 133 casinos we tested. We believe that 21 Casino online casino is one of the best options for players looking to maximize the value of their first deposit in the United Kingdom.

Test Results: Bonus Value for a £100 Deposit

Winner: Dream Vegas Casino, ABV100: £53.46
In 15th place : 21 Casino Casino, ABV100: £9.41
Average Bonus Value of £100 first deposit in UK: £-14

See 21 Casino UK Online Casino full test results here.

Customer service is a very important factor to consider when deciding which UK online casino to gamble with. You should feel confident that the casino you choose have reliable and timely customer support. However, it’s not easy for you to measure and assess customer servcie for every online casino in the United Kingdom.

Instead, you can find the results from our Live Chat and email tests which were run across all 133 UK online casinos.

How quickly and often does customer service respond to emails at 21 Casino Online Casino?

21 Casino UK tested really well in our recent email support test with a reply rate of 100%. This means that you can expect a timely response to your email questions from 21 Casino UK. We would consider 21 Casino UK one of the best casinos for customer support.

21 Casino Casino finished our recent email support test averaging 2 hours & 29 minutes per response. 21 Casino UK was in the top 50% and responded to emails just over 13 hours faster than the average casino. While this was certainly not the worst result from our test, 21 Casino Casino can definitely work to improve the speed and responsiveness of its email support.

Test Results – Average Email Response Time

Winner: Vegas Mobile Casino Casino, 7 minutes
In 49th place : 21 Casino Casino 2 hours & 29 minutes
Average email response time of online casinos in New Jersey: just over 16 hours

Does 21 Casino offer a live chat?

Does 21 Casino has a live chat?: Yes
Opening Hours: 24/7

See 21 Casino UK Online Casino full test results here.

Most UK online casino players would agree that they want options when it comes to a game library. Unfortunately, it’s unlikely that you have the time to review the game library for every UK online casino. That’s the main reason we wanted to test the game selection available at 21 Casino Casino in different gambling categories like sports betting, roulette, blackjack, and slots.

Here are the results of 21 Casino UK in our the United Kingdom game selection test.

How large and diverse is 21 Casino casino’s game library?

21 Casino Casino offers live casino, poker and bingo in addition to a library of many familiar game types like slots, roulette, and blackjack. Unfortunately, 21 Casino UK did not offer odds, livebetting, fantasy sports or horses as of our latest test.

The amount of games (1,503) and variety of options earned 21 Casino UK 4.5 stars and 66th place in our latest catalog test for the United Kingdom casinos.

21 Casino UK has a game library that’s considered better than average for the United Kingdom. We know this because our team tested the variety and breadth of 21 Casino Casino and every other UK online casino. 21 Casino Online Casino ended up above the average for the United Kingdom with a total count of 1,503 games and earned 4.5 stars.

Test Results – Which UK online casino has the best game selection?

Winner: Videoslots Casino
Number of Games: 6,237
Non-traditional Game Types : live casino, poker and bingo

In 66th place : 21 Casino
Number of Games: 1,503
Non-traditional Game Types: live casino, poker and bingo

Average number of online casino games at an UK online casino : 1,557 games

See 21 Casino UK Online Casino full test results here.

Most gamblers would prefer a fast-loading online casino over a slower one. Unfortunately, measuring the page load speed for all 133 UK online casinos is not easy to do yourself. Thankfully, we found the fastest loading casino in the United Kingdom by testing them all for you.

How Fast is 21 Casino online casino?

21 Casino UK came in 93rd place out of 133 casinos in our latest test of page load speeds in the United Kingdom. It had an average load time of 3.39 which was below the state average of 2.95.

If you are someone who values their time and doesn’t want delays, consider finding an UK online casino higher up on our ranking for page load speed.

See 21 Casino UK Online Casino full test results here.

Test Results – Which UK Online Casino is the Fastest?

Winner: Vegas Mobile Casino Casino
Average Page Load Speed : 0.33 seconds

In 93rd plats: 21 Casino casino
Average Page Load Speed : 3.39 seconds

Average page load speed of an UK online casino: 2.95 seconds

Bonus and Promotions Test

For our UK online casino bonus and promotions test, we considered and included both no deposit bonuses and first deposit promotions at each online casino. For the first deposit bonus, we used a standard £100 deposit as the baseline since each casino has its own maximum deposit eligibility for first deposit bonuses.
We call our calculation the Actual Bonus Value (ABV) and it includes different metrics and playthrough requirements depending on the bonus we’re evaluating. The ABV100, for example, looks at the value of a bonus if we deposit £100.
Below are 21 Casino’s bonus and promotion test results.

21 Casino UK online casino did not offer a No Deposit Bonus to new players.

First Deposit Bonus Type: Match
Minimum Deposit Amount: £10
Actual Bonus Value for a £100 First Deposit: £9.41
ABV100 First Deposit Rank: 15 out of 133
ABV100 First Deposit Stars: 1.0 out of 5 stars

21 Casino UK online casino did not offer Free Spins as part of its welcome bonus package.

We then combined the value of 21 Casino’s no deposit bonus, first deposit bonus (£100), and available free spins to create a complete overview of the value of 21 Casino UK online casino’s welcome bonus.

Actual Value of Total Welcome Bonus Package: £9.41
Welcome Bonus Rank: 15 out of 133
Welcome Bonus Stars: 3 out of 5

Customer Support Test

For our online casino customer support test in the United Kingdom, we considered the speed and responsiveness of each casino’s online support via email and live chat. These two tests in addition to live chat availability (hours of operation), were used to determine the total rankings and stars awarded to each UK online casino.
Below are 21 Casino’s results for the email and live chat customer service tests as well as its overall ranking relative to all the United Kingdom online casinos we tested.

Email Reply Time: 2 hours & 29 minutes
Email Test Ranking: 49 out of 133
Email Support Stars: 4.5 out of 5

Live Chat Operating Hours: 24/7

Casino Game Library Test

In our online casino game library test for the United Kingdom, we focused on the total number of games available as well as the categorical variance of each casino’s library.
For example, did the casino offer poker? Did it have sports betting? How many online slots does it currently have available?
By combining the breadth and depth of UK online casino’s game library, we believe we can provide an accurate answer to “which online casino in the United Kingdom has the best game selection?”
Below is 21 Casino’s results in our game selection test and how it compared to every UK online casino we tested.

Total Number of Casino Games: 1,503
Total Number of Game Types: 3, live casino, poker and bingo
Casino Game Selection Ranking: 66 out of 133
Casino Game Selection Stars: 3.0 out of 5

Online Casino Speed Test

In our online casino game library test for the United Kingdom, we focused on the total number of games available as well as the categorical variance of each casino’s library.
For example, did the casino offer poker? Did it have sports betting? How many online slots does it currently have available?
By combining the breadth and depth of UK online casino’s game library, we believe we can provide an accurate answer to “which online casino in the United Kingdom has the best game selection?”
Below is 21 Casino’s results in our game selection test and how it compared to every UK online casino we tested.

Average Load Time: 3.39 seconds
Online Casino Speed Ranking: 93 out of 133
Online Casino Speed Stars: 2 out of 5

Total Ranking of 21 Casino UK online casino

When calculating the total ranking for 21 Casino we considered its scores and star ratings for each of the individual casino tests. By combining 21 Casino’s scores, we can compare its results against all the other UK online casinos to determine which online casino is the best in the United Kingdom.

Test points based on 21 Casino’s rankings (the lower the better):
Bonus and Promotions: 52 points
Customer Support: 28 points
Game Selection: 66 points
Casino Speed: 93 points
Total: 22.15 points
Ranking compared to other UK online casinos: 95 out of 133 casinos

Stars based on 21 Casino’s test results: Bonus and Promotions: 1.0 out of 5
Customer Support: 4.5 out of 5
Game Selection: 3.0 out of 5
Casino Speed: 2 out of 5
Average: 2.78125 out of 5 (displayed as 3.3875 stars in reviews and top lists)
Star ranking compared to other UK online casinos: 97 out of 133

Our overall ranking of 21 Casino casino includes both points and stars which we weight equally. If a casino is tied, we use points as the deciding factor to determine which UK online casino is best. 21casino.com’s total ranking is 26 out of 133 UK online casinos.