£5 FREE Sign-up Bonus No Deposit Required July 30, 2018 Bingouncle Sun Bingo needs no introduction. The iconic, and certainly cheeky, bingo label has been a staple of the industry for as long as we can remember. Avid bingo fans and rookies alike enjoy a wealth of offers and a rich social experience that’s hard to match in gaming. Sun Bingo is offering all newcomers a NO DEPOSIT, free £5 Sign-up Rainbow Riches Bonus. All you have to do is register to start enjoying that £5 bonus on a great slot title. The offer doesn’t stop there, you can get more as new player… Spend just £10 and you’ll get a £20 Bingo Bonus and a £10 All Games Bonus. Basically, you can turn a tenner into £40 worth of gaming time.