Girls Aloud: 'Higgins is key to our success'

Nicola Roberts has claimed that producer Brian Higgins is the key to Girls Aloud's success.

The 23-year-old singer said the Xenomania boss deserved credit for the girls' "critical acclaim".

"When we first turned up at his house, he described us as 'cavewomen'," she told Metro.

"We were bolshy, loud and opinionated but naive about the business. He rolled with it and it worked. The critical acclaim we've got is because of Brian."

When asked how much of their success was down to Higgins, Roberts answered: "Most of it, to be honest."