To use your free bet bonus, all you have to do is place a bet. On the betting slip, you will see a section which says 'Select your freebet'.
Once you click this, select 'BET5GET5' and the bonus will then be applied to your bet you are trying to place.
Should your bet be over £5, the remainder of your bet will be covered with cash funds.
Please note, your £5 freebet will be credited to your account within 24 hours of your bet being settled.