When you register a new account at
Tea and Bingo, you can receive a pretty good first deposit bonus. Spend just £10 and they will give you a £10 free play or spend £50 and get £50 free play - so that's 100% bonus on anything from £10 to £50!
When you receive your bonus, you need to to wager this amount just once on bingo before you can request a withdrawal for bonus winnings. Until you have met this requirement all winnings will be held in your pending balance and will not be withdrawable.
Good luck!