New customers to gala bingo, deposit £5 and play it all in bingo rooms and get £38.38 cashback through top cashback. Did this a while ago when you had to deposit £10. Got my cashback and I got to keep my winnings on the bingo too! Cant say no to £33 free money.
Edit: Apparently they have lowered the cashback amount now, still at £30 though so still getting £25 free cash!