Robbie Williams would take drugs with his daughter if she ever wants "to go there".

The 39-year-old singer and his wife Ayda Field welcomed Theodora Rose into the world in September last year.

Robbie famously battled drug addiction and alcoholism in the past, but has since become sober.

The star insists he'd dabble again if his daughter ever wanted to experiment.

'I doubt she'll be like me. Touch wood, and follow that with a lot of love and a lot of luck, she won't go there or have to go there," he told an Australian magazine, as quoted by British newspaper The Sun.

'If unfortunately that does happen, I'll know what to do. Which is make sure she's got the best drugs possible - and take them with her.'

Robbie has written a song for his young daughter, which was inspired by his substance abuse and the dark times he experienced as a result.

The former Take That star says the lyrics go into detail about his history.

'It goes, 'Sit down, close the door I think it's time you knew the score, why you feel weird.

'One day you'll be told about, how Daddy let his demons out, yeah he makes them scream and shout. So what better when you're old enough, and you're out on your own and stuff, if you start losing hold of love it's because...

'Your uncle sells drugs, your cousin is a cutter, your grandma is a fluffer, your grandad's in the gutter, your mother is a nutter, you're a mad motherf**ker.'

Robbie also revealed in the interview that his daughter is friends with Adele's eight-month-old son Angelo.

'Her son and my daughter go on play dates. Little Peanut is on the list of potential suitors for Teddy," he smiled.