Best Online Bookmakers in 2021

Find the right betting site for you by selecting from the top bookmakers online in 2021 that we have listed below. Sign up to the UK betting sites from the list and claim their associated free bets today.

The betting sites have been reviewed and rated by their features and sign up offers.

1.
Mr Play Sports Reviews Mr Play Sports Reviews

Bet £10 Get £10 Free Bet

Mr Play Sports Reviews Cash Out, Player Props, Live betting, Fast Markets, Acca Bonuses and Player Tournaments with big Prizes like the Cheltenham £25,000 Prize Pool.

Play nowPlay now
#AD 18+ Full Terms & conditions apply
18+, Mr. Play Welcome Bonus: New Players only, 1st Deposit, Minimum Deposit of £10, Maximum of £10 free bet. Valid for 14 days, bets must be placed at odds of 1/1 or greater and be settled within 14 days of placement. System bets not eligible. Full T&C's apply.
2.
MansionBet Review MansionBet Review

Bet £10 Get £20 Welcome Offer

Join an award winning bookmaker owned and operated by online gaming megabrand, Mansion Ltd. Expect top customer service with just about every sport available to bet on. Throw in lots of tempting and useful promotions and you have a top gambling site to enjoy.

Play nowPlay now
#AD 18+ Full Terms & conditions apply
New customers only, min deposit and bet £10 (£20 if E/W bet) from UK Debit card only. Paypal not accepted. Min odds evens (1/5 per multi selection). 4x £5 Free Bets valid for 7 days, stake not returned, no cash out. T&Cs apply.
3.
Infernobet Review Infernobet Review

Bet £10 Get £10 Bonus

Take a ride on Infernobet and experience some hot in-play betting excitement. Fully UK Licensed gambling operator with a Infernobet welcome bonus of a £10 Free bet. Sports & Casino bookmaker.

Play nowPlay now
#AD 18+ Full Terms & conditions apply
New players only. Minimum stake $/£/€ 10, minimum odds 1.5, stake not returned. 10X wagering the winnings from the free bet. Wagering occurs from real balance first. Wagering requirement is calculated on bonus bets only, wagering starts from real funds. Free bet is valid for 7 Days from issue. Max conversion: $/£/€ 20.Excluded Skrill deposits.
Full Terms Apply
4.
TonyBet Review TonyBet Review

100% First Deposit Bonus up to £50

Sports betting website with Football & Horse Racing. Casino, Live Casino & Live In-Play excitement. First time deposit Bonus of 100% with TonyBet Bonus Code: TONY50.

Play nowPlay now
#AD 18+ Full Terms & conditions apply
18+ only. Full T&C's apply.
5.
Mobile Wins Review Mobile Wins Review

Bet £10 Get £30 with Deposit Code: MW30

Enjoy a top mobile betting experience with a specialist gambling operator. Sports & Casino mobile site with great Live betting excitement.

Play nowPlay now
#AD 18+ Full Terms & conditions apply
New players only. Minimum £10 qualifying bets. No cash-outs allowed. Free bet is a one-time stake of £30, minimum odds of 1.5, stake is not returned, maximum Conversion £30, 10X wagering the winnings, valid for 7 Days from issue. Excluded Skrill deposits. Full Terms apply.

If you need to find more information and read how we have rated the gambling sites please visit the review page link for each one or go straight to the betting site itself. There you will find details on bonuses, minimum bets, depositing and withdrawing money along with support options.

5 Star Bookmaker Reviews

Each bookmaker review also takes into consideration a number of factors including safety, security, longevity, reputation, customer friendliness and of course the size of the bonus. The welcome bonus amount alone doesn't necessarily warrant a higher rating. Rather the ease of claiming the free bonus comes into play.

There's no point, in our opinion, of waving an attractive amount of free betting money in front of you. Punters need to able to get their hands on the free betting money without complication. A player needs to be able to use the bonus to bet with without jumping through hoops or qualifying any complicated terms and conditions.

Bookmakers Free Bets

The free bets offered by online bookmakers vary in amount. The bonus amounts range from £10 up to £200. I have yet to see any amount larger than £200 offered by an online bookmaker. These amounts should accomodate all bettors needs.

It's just a case of choosing which amount you want to go for. Or use as many of the free bets as you can. This is what I did when I started out online gambling. I opened many different online bookmakers accounts and utilised each free bet at a time.

You need to note though, that the free bets aren't entirely “free”. This is because you will have to place a qualifying first bet or make a first deposit amount. You will then be able to release your free bet bonus amount.

Also, although most of these requirements are straightforward, place a bet of £10 and get a £30 free bet or deposit £10 to get a free £10, a few of the bookmakers make it more complicated.

To start with I suggest that if you only want to place a smaller first bet then choose Coral as they will give you a £20 free bet when your first wager is only a £5.

If you are ready to maximise the highest amount of bonus on offer then go for the online bookmakers that offer deposit bonuses.  There are sometimes up to £100 as a bonus available for anyone who deposits the maximum £200. This will give you a cool £300 starter bank to begin betting with.

UK Betting Sites

I am defining british bookmakers by the fact that they are regulated and have a full license from the UK Gambling Commission. They publish the names of all bookmakers and individuals who hold, or have applied for, operating licences in Great Britain.

You can visit the Gambling Commission website here.  It's worth noting that very few bookmakers online are actually based in the UK, most are or have recently relocated to Malta or Gibralter for tax reasons. The following are the mainstream online bookmakers that are legally allowed to offer services in the UK.

Bookmakers Offers and Loyalty Bonuses

Once you have signed up to one or more of the bookmakers you will then be rewarded as an existing customer too. So long as you continue to wager on regular occassions, you will receice  loyalty free bets.

The online bookmakers want to keep your custom and most of the better bookmakers will entice you with regular free bets and offers. The way this happens won't necessarily be advertised rather you will receive an instant credit of a free bet from time to time.

You also have a chance to join a bookmakers loyalty club. In return you will be rewarded with free bets from time to time from the bookmakers. This is usually descretionary by the betting site.

All in all you should pick and choose your bookmaker with the one that best suits your type of betting. Some betting sites are more horse racing orientated, see Betfred for example and their regular horse racing promotions. Other bookmakers will be more attuned to football punters and many cater for both markets with equal extensive coverage in their betting markets and offers.