Where the court makes a relevant ruling—
it must state in open court (but in the absence of the jury, if there is one) its reasons for the ruling;
if it is a magistrates' court, it must cause the ruling and the reasons for it to be entered in the register of the court's proceedings.
In this section "relevant ruling" means—
a ruling on whether an item of evidence is evidence of a person's bad character;
a ruling on whether an item of such evidence is admissible under section 100 or 101 (including a ruling on an application under section 101(3));
a ruling under section 107.