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The "Sponsored" icon means that the position of the bookmaker in this list is determined on a commercial basis.

The ratings on Legalbet are compiled as honestly and objectively as possible, so we indicate "Not for sale" on them to make it clear which are based on merit.

Bookmaker Betting Offers & Free Bets in the UK September 2023

Legalbet.uk is your top destination for the latest and best bonuses and free bets from the best online bookmakers in the UK. Most of the bookies are offering bonuses to attract bettors to join them, but these bonuses can come in different forms and not all of them are profitable long term. However, the Legalbet team takes into consideration several factors when selecting the best bookmakers, in order to be able to provide our customers with regularly updated bonuses and free bets offer. Furthermore, we’re also checking all the features of an online bookmaker before adding it in our list of the best bookmakers in the UK.

Bookie Bonus Opinions
£40 Free Bet Offer
New 18+ UK customers only. Promo code WELCOME40, deposit and place first bet of £10+ on Sports (cumulative Evens+) within 7 days of registration. First bet must be on Sports. £30 in Free Bets and £10 in Free Spins (50x20p). Free Bet stakes are not included in returns. Bonuses have a 7-day expiry. Payment restrictions apply. SMS verification and/or Proof of I.D and address may be required. Full T&Cs apply.
£40 Free Bet Offer
Every Free bet is valid for 7 days. Each bet can be used as a single bet on pre-match and In-Play markets. The Max payout is £500. The Free bet amount cannot be withdrawn. Cash Outs cannot be used on Free bets. The Free bet amount is not included in returns.
Get 50% Back as a Free Bet up to £35 Plus 10 Free Spins!
Only UK bettors over the age of 18 can claim the new customer offer. Not applicable on Trixie/Patent/Yankee. One Free bet per person is allowed. The maximum odds permitted with the Free bet are 100/1 single or combined. Customers who deposit using Neteller/Skrill do not qualify for this offer. Any returns from the Free bets will be paid back into your account minus the Free bet stake. Read the T&Cs for details.
No bonus
UK players only - 18+ - BeGambleAware - T&C's Apply
£30 Free Bet Offer
New 18+ UK customers only. Promo code WELCOME40, deposit and place first bet of £10+ on Sports (cumulative Evens+) within 7 days of registration. £30 in Free Bets and £10 in Free Spins (50x20p) credited within 10 hours of bet settlement. Free Bet stakes not included in any returns and have 7-day expiry. Payment restrictions apply. SMS verification and/or Proof of I.D and address may be required. T&Cs apply.
£20 in Mobile Free bets
18+. UK Customers (Excluding NI) only. Min £10 stake required for initial £5 free bet. Min odds ½. Max £25 in free bets. Subsequent free bets equal 50% average of each 3 £5 max qualifying bets. Make 13 settled bets to receive full £25 free bet. Qualifying bets must be made within 30 days of opening account. One free bet offer per customer, household or IP address. Free bets last 7 days. Full T&C's apply.
£10 Free bet
Only 18+ new users registered using the “MB20” bonus code are eligible. You must make a qualifying bet of 1.8 minimum odds within 14 days of registration to claim this new customer offer. The maximum refund is £20 as a Free bet, expiring after seven days. Deposits via paysafecard, Neteller, or Skrill are exempt. Matchbook’s general Terms and Conditions apply.
£10 Free Bet and 10 Free Spins
New customers only. Min £10 deposit and bet on odds 1/2 or greater required. Free bet and free spins issued within 24 hours of qualifying bet being settled. Free bet valid for 6 months, stake not returned. Free spins valid for 7 days, selected games only. UK only excl Northern Ireland. 18+ T&Cs apply.
All British Casino’s welcome offer: Get 10% cashback on your losses!
Cashback is cash without restrictions. No Max cashout. Gambling can be addictive. Play responsibly. Full T&C's apply. 18+
Get a £10 Free bet when you stake £15
The new customer offer. Minimum deposit: £15. Minimum wagering on sports to activate the Free bet token: £15. Void/cancelled or cashed-out bets do not count towards wagering to activate the Free bet. Customers who deposit using PayPal, Neteller, Paysafe, Skrill or Skrill 1-Tap will not be eligible. A further list of the types of play that are excluded from this promotion is included in the Bonus Policy.
£40 Money back as bonus
New verified customers from the UK only, 18+. Minimum bet £1. Not applicable to horse and greyhound racing, trotting, or virtual sports. Odds 2/5 or greater. Each leg of the multiple bet needs to be 2/5 or greater too. 3x wagering required: if you get £40, you have to bet £120 to withdraw the bonus. Available within seven days of registration. Full T&Cs apply.
GET UP TO £10 BACK AS A FREE BET
Every losing bet that is cancelled, partially cashed out, or completely cashed out will not be deemed a qualifying bet. Additionally, only the win part of the each-way wager will be considered if you place a qualifying bet on an each-way wager. 18+ new customers only. Visa/Mastercard payments only. 1 registration bonus per customer. Available for 3 days. Full T&C apply.
50% Back As Free Bet On First Day Losses (Up to £25)
First day losses equals all settled stakes less all returns. Free bets must be used in their entirety and stakes are deducted from returns. Free bets non withdrawable. Free bets credited within 24 hours. If your free bet is subsequently voided it will be replaced within 24 hours. Cashed out bets do not count. This offer is limited to a free bet award per person/household/IP address. Betgoodwin T&Cs apply.
Bet £10 for £10 Free Bet offer
New UK customers only. Min Deposit: £5. Maximum Free Bet: £30. First bet on a Football or Horse Racing multiple with 3+ selections. Odds 3.00 (2/1) or higher. Free Bets awarded on settlement of qualifying bet. Offer valid for 7 days. 50 Bonus Spins credited on placement of qualifying Acca..50x bonus wagering, bonus Spins expire after 7 days. Debit card deposits only. 18+. BeGambleAware.org. Full terms apply.
£30 Free bet Welcome Bonus
New 18+ UK customers only. Register using the promo code H30 , deposit and place first bet of £10+ on Sports (cumulative Evens+) within 7 days of registration. First bet must be on Sports. £30 in Free Bets credited after bet settlement. Free Bet stakes not returned. Bonuses have a 7-day expiry. Payment restrictions apply. SMS verification and/or Proof of I.D and address may be required. Full T&Cs apply.
£10 Welcome Bonus
UK players only - 18+ - BeGambleAware
Sign Up to Bwin to Get a £20 Backup Bet
18+ new UK customers only, £10 min deposit to get the welcome offer, and place 3+ selection sports bets. Minimum stake £10, max stake £20, and min odds 2/1. It can’t be used with any other sign-up offer. Deposits via Skrill, PayPal and Entropay don’t qualify for the bonus. Valid for seven days, and all T&Cs apply.
100% cashback
For new registered customers only. Stakes must be placed with real money in combination with the odds boost token. The offer applies to sports bets only. The maximum total stake is £10. Each way bets are a maximum of £5 each way. T&C's apply.
50% deposit bonus (Up to £50)
New bettors get 50% as a deposit bonus, up to £50. 18+ only. One welcome offer per household. Min deposit £15 (no Skrill/Neteller). Wager deposit and 8x bonus. Max qualifying bet stake = initial bonus. Valid for 60 days. Min odds: 4/5 for singles, 2/5 per acca leg. Some bet types are excluded. Full T&C apply.
£10 Free Bet Offer
18+, Welcome Bonus: New Players only, 1st Deposit, Min Deposit: £10, max £15 bonus, valid for 14 days, bets must be placed at a min. odds of 1/1 (2.00) or greater and be settled within 14 days of placement. System bets no eligible. T&C's Apply.
£15 Free Bet Offer
You will not be eligible for the welcome offer if you deposit funds using PayPal, Skrill, Neteller, or PaySafe. Only 1 Free bet token to be used per account. The stake of the token will not be included in any winnings. The winnings can be withdrawn right away. It can only be used in sportsbooks. The Free bet Token cannot be split. The token will expire in 14 days. Full T&C apply.
BET £20, GET £20
UK Only, 18+, Bet £25 to get a £10 Free bet. T&C's Apply
BET £25 AND GET UP TO £50 IN BONUSES
You must be 18 or over. Only UK bettors qualify for this welcome offer. A qualifying bet of no less than £25 must be made to claim this bonus. Qualifying bets cannot be cashed out early or placed In-Play. You must claim these Free bets and spins within 28 days of opening an account and to claim these bonuses, you must have verified your account with Proof of ID and address. T&C's Apply.
New bettors at LeoVegas get a generous bonus of a 100% profit boost, up to £100. Terms and condition
Significant terms: Full T&Cs Apply. New reg only. Claim by placing a min deposit £10 via "My Offers" page within 30 days. Skrill/Neteller deposits excl. 7 days to stake max £10 in-play. Max. extra winnings £100. 18+ BeGambleAware.org.
£5 Free Bet Acca Offer
DEPOSIT AND PLACE A £10 TREBLE OR MORE / MIN ODDS 1/3 (1.33) PER SELECTION. £10 FREEBET / VALID 7 DAYS / T&CS APPLY / 18+ / BEGAMBLEAWARE.ORG
100% up to £50
UK players only - 18+ - BeGambleAware - T&C's Apply
Up to £100 in Free Bets
UK players only - 18+ - BeGambleAware
£20 in Free Bets
UK players only - 18+ - BeGambleAware
Bet £10 for £20 Free Bet Offer
UK players only - 18+ - BeGambleAware
Money Back in Cash up to £10 offer
UK players only - 18+ - BeGambleAware
Bet £10 for £10 free bet offer
£20 Free Bet Offer
UK players only - 18+ - BeGambleAware
£10 Free Bet Offer
18+. Only available to new, verified customers residing in the UK that have registered after 10:00 (UK time) on November 14, 2022. Place a first ever Sportsbook bet of a min. £2 (multiple bets comprising at least 3 selections; min. odds 3/10 (1.3) per leg; live/in-play or pre-match). Full T&Cs apply.
£20 of freebets (after wagering £10)
UK players only - 18+ - BeGambleAware
£20 Free Bet Offer
UK players only - 18+ - BeGambleAware
Wager £20 for a £10 freebet
UK players only - 18+ - BeGambleAware
£20 Free Bet Offer
New bettors only. Free bet - one-time stake of £10, min odds 1.5, stake not returned. 1X wagering requirement for the winnings. Wager from your real balance first. The wager is calculated on bonus bets only. Max conversion: £200. Valid for 7 days from issue. A withdrawal request voids all active/pending bonuses. Excludes Skrill deposits. Full T&Cs apply.
Bet £5 to get £20 in Free bets
UK players only - 18+ - BeGambleAware
£50 Free bets Welcome bonus
UK players only - 18+ - BeGambleAware
£40 Free Bet Offer
New bettors only. Min £20 qualifying bets stake not returned. Free bet – one-time stake of £40, min odds 1.5, stake not returned. 1X wagering requirement for the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Valid for seven days from issue. Withdrawal requests void all active/pending bonuses. Skrill and Neteller deposits are excluded. Full T&Cs apply.
£30 Free bet credit
New players only. Minimum £10 qualifying bets, stake not returned. Free bet terms: minimum odds of 1.5 and a £30 wager with no refund on the stake. Bets must be at evens or above (1/1). Bet the actual balance first. Maximum conversion: £200. Promotional value expires seven days after issuance. Withdrawal requests void any active bonus. Skrill payments are excluded. Read all the T&Cs.
No Welcome Bonus
UK players only - 18+ - BeGambleAware
See also
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