@freddiefact thank you, actually gave it ago as I noticed the 1x wager thought it looked to good to be true! Currently withdrawing £79 from this I’m not good with slot offers, I’m over the moon with this :)
@jamespa I've just looked at a handful more sites and the only one I can see that still does the free £5 bonus is Costa Bingo. Don't know whether the loophole still works or not, but even if not it is still worth doing as it is risk-free.
Went to do this offer today but the lady on the phone told me it has expired now and is no longer active. For my troubles she credited the £5 bonus anyway. Win Win but maybe it should be taken of the Bingo offers now that it is no longer active.