Singer Tom Fletcher said that he will be penning more songs for the boyband after contributing 'I Want' to their debut album Up All Night, which reached number one in the US last week.
"I can't wait to write more tunes for One Direction as I'm really proud of their success in America," Fletcher told the Daily Star.
"I haven't been given a brief as to what kind of song they want from me; we're just waiting to see what I come up with."
The singer-songwriter insisted that One Direction can benefit from McFly's nine years' experience in the music industry, as they have been through similar experiences themselves.
He added: "Some songwriters have never been in a band, but the One Direction guys can relate to me, as I've been through the same kind of experiences as they have.
"When I've been in the studio with them, the manic atmosphere was just the same as when we made our debut."
McFly drummer Harry Judd recently told Digital Spy that the band took their success for granted and "realised how hard it was to get people interested again" after releasing their last album Above The Noise.
> McFly interview: 'We can't imagine splitting up'
Watch the music video for One Direction's 'One Thing' below: