Verified bonus codes
Grosvenor Casinos bonus code — October 2026
Grosvenor Casinos currently runs its offers without a bonus code — they apply automatically. That answer was verified on the operator's own page, not assumed. Each offer shows its significant terms and its own verification date, and every change we catch afterwards is logged publicly on the Bonus Changes Tracker.
Deposit £20, Get a £40 Bonus + 100 Free Spins on Big Bass Splash
- Min deposit:
- £20
- Wagering:
- 10×
- Valid for:
- 30 days
- Max bet while wagering:
- £5
Significant terms
This promotion is open to new players of Grosvenor Casinos aged 18 or over who can view it in the 'Promos' section of their account. To claim, players must select the offer in the cashier and make a minimum first deposit of £20 using an eligible payment method; deposits via PayPal or Paysafecard do not qualify. A £40 bonus is credited instantly to the bonus balance alongside 100 Free Spins on Big Bass Splash. The qualifying deposit (£20) plus the bonus (£40) must be wagered ten times (10×) before any winnings can be withdrawn from the bonus balance — total wagering required: £600. Winnings from Free Spins are also credited as a bonus and are subject to a 10× wagering requirement, playable on Big Bass Splash. If an active cash balance exists, all wagers are taken from that balance first, followed by the bonus balance. When a wager combines cash and bonus funds, any resulting winnings are credited proportionately to each balance. Cash in the cash balance may be withdrawn at any time. The maximum amount that can be converted from the bonus balance to cash is £2,000. The bonus is valid for 30 days from the date it is credited; any unwagered bonus balance is forfeited upon expiry. By claiming this offer, players become ineligible for any other welcome offer on grosvenorcasinos.com. There is one welcome offer per person. The promotion runs until further notice. Wagering contributions may vary by game. 18+. BeGambleAware.org. T&Cs apply.
#ad. 18+. New players only unless stated. Full operator T&Cs apply · Gamble responsibly — BeGambleAware.org
Deposit £20, get a £40 welcome bonus plus 100 free spins on Big Bass Splash
- Min deposit:
- £20
- Wagering:
- 10×
- Valid for:
- 30 days
- Max bet while wagering:
- £5
Significant terms
This promotion is open to new players of Grosvenor Casinos aged 18 years and over only. To be eligible, players must select the welcome offer in the cashier and make a minimum first deposit of £20 (deposits via PayPal or Paysafecard are excluded). Upon qualifying, players receive a £40 bonus credited to their bonus balance plus 100 free spins on Big Bass Splash. The free spins are exclusive to Big Bass Splash; players must launch the game to receive the spins, have 24 hours to click 'claim', and once claimed must use the spins within 7 days or they expire. Each free spin has a value of £0.10. The £40 bonus (and the £20 qualifying deposit) must each be wagered ten times (10×) before any winnings can be withdrawn from the bonus balance — total wagering requirement = £600 ((£20 + £40) × 10). The maximum amount that can be converted from bonus balance to withdrawable cash is £2,000. Players have 30 days from the date the bonus is credited to their account to meet the wagering requirements; unused bonus funds are forfeited on expiry. The bonus can only be used on a selection of eligible slot games; wagering contributions vary by game. If a player holds an active cash balance, all wagers will be deducted from the cash balance first, followed by the bonus balance. Withdrawing cash funds prior to completing wagering will result in forfeiture of the bonus balance. Claiming this offer makes the player ineligible for any other Grosvenor Casinos welcome offer. No promotion code is required. Minimal-risk wagering strategies (e.g. simultaneously betting Red and Black on roulette) will not count towards wagering requirements; Grosvenor Casinos reserves the right to forfeit bonuses and associated winnings where abuse or fraud is identified. The promotion runs until further notice. This promotion is subject to Grosvenor Casinos' General Terms and Conditions. 18+. Please gamble responsibly.
#ad. 18+. New players only unless stated. Full operator T&Cs apply · Gamble responsibly — BeGambleAware.org
Change history for Grosvenor Casinos
Material changes our re-verification has caught on Grosvenor Casinos's offers — the reason a dated codes page beats a copied one.
- 1 September 2026Deposit £20, get a £40 welcome bonus plus 100 free spins on Big Bass Splash→Deposit £20, get a £40 welcome bonus plus 100 free spins on Big Bass Splash
- 25 August 2026Deposit £20, get £20 casino bonus (£40 to play)→Deposit £20, get a £40 welcome bonus plus 100 free spins on Big Bass Splash
Frequently asked
- What is the current Grosvenor Casinos bonus code?
- Grosvenor Casinos does not require a bonus code at the moment — the offer applies automatically when you sign up through the operator's own promotion. If that changes, this page updates and the change is logged on our Bonus Changes Tracker.
- When were these offers last verified?
- The most recent cross-check against Grosvenor Casinos's own promotions page was on 7 October 2026. Every listed offer carries its own verification date, and our automated re-verification cycles the whole roster on a rolling schedule.
- Why do bonus codes and terms keep changing?
- Operators rotate eligible games, wagering requirements, expiry windows and codes without announcements — it is normal, and it is why a months-old codes page is worse than none. We log every material change we catch, before and after, on the Bonus Changes Tracker.
Read the full Grosvenor Casinos review for the licence check, payout record and complaint patterns, or browse every verified UK bonus.