Lucky 31 Bet Calculator
A bet on five selections, which produces a return if any of them wins. This is actually thirty-one separate bets. There are often also bonuses for this kind of bet which aren't included here.
Calculate the possible winnings for a Lucky 31 Bet

Bet £10 Get £30
Jeffbet
New Players Only. Min £10 qualifying bets, stake not returned. Free bet - one-time stake of £30, min odds 1.5, stake not returned. 1X wager the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Valid for 7 Days from issue. 18+. #AD

Bet £10 Get £40
Unibet
18+. BeGambleAware.org. New GB customers only. Min £10 debit card deposit. Place a £10+ bet on sportsbook at min odds 1/1 (2.0) each leg. Receive 2 x £10 free bets within 24 hours of bet settlement, and further 2 x £10 casino bonus the next day.T&C’s apply. 18+. #AD

Spend £5 For £20 Of Bets
Ladbrokes
New UK+IRE Customers only. Certain deposit methods & bet types excl. Min first £5 bet within 14 days of account reg at min odds 1/2 to get 4x £5 free bets. Free bets available to use on selected sportsbook markets only. Free bets valid for 7 days, stake not returned. Restrictions + T&Cs apply. 18+. #AD