She explained: “It was a really interesting subject that Heidi first spoke to me about and the penny just dropped when they said we’re going to look at Trixie’s drinking.
“It was almost in that moment that I could imagine people who suffer with drinking problems have that sort of dawning moment of, ‘Oh God, of course, there is a problem.’
“She definitely faces up to that and you know and we’re still dealing with that it hasn’t gone away, it’s a constant.”
She added: “Trixie has this wonderful stage of going back to the AA meetings so you can always sort of check with her how she’s doing as a character.”
Call the Midwife airs Sunday on BBC One at 8pm
source: express.co.uk