betfair - bank transfers

could anyone confirm to me if i make a next day bank transfer today (b4 midnight) and pay £6 for the service that the funds would then be cleared onto my card ready for 2morrow ??? (sat)
or does the next day transfer mean just MON TO FRI ????
w/ends not included ?? i dont really want to waste £6 to find out my cash wont be in my bank sat .
any help in this matter is really appreciated
regards