With Amy hand-picking Mark to produce her hugely successful Back to Black album, you'd think she'd be at least civil to him wouldn't you?

Well, there was no hiding how grateful the Rehab singer was when she Tweeted this, following comments Ronson made in an interview with Jools Holland:

"Ronson you're dead to me. One album I write and you take half the credit - make a career out of it? Don't think so BRUV."