'Pass Out' hitmaker Tinie - a virtual unknown a year ago - was named Best Newcomer and took home Best Video for his song 'Frisky' featuring producer Labrinth at the awards which celebrate Music Of Black Origin.
JLS - who were named Best Newcomer last year - took home Best Album for their self-titled debut and Best UK Act at the event in Liverpool, Northern England.
N-Dubz singers Tulisa and Dappy - who, along with bandmate Fazer, picked up Best Song for their track 'Playing with Fire' - said they were glad to see Tinie finally getting the recognition he deserves.
Dappy exclusively told BANG Showbiz: "When he hooked up with Labrinth, Boom! it went off. Before that he was working and struggling for years. I thought at one point he was to disappear, but then he made 'Pass Out' and woooop!"
Tulisa added: "I've known Tinie for about six years now. His sound has changed up, he's had to package himself and find himself, find something unique - but as a person he's the same as I've always known. He seems a lot happier in himself though."
Nelly said he enjoyed checking out the new UK talent at the ceremony and performed his new single 'Just A Dream'.
Full list of MOBO award winners
Best Newcomer - Tinie Tempah
Best UK R&B / Soul Act - Plan B
Best UK Hip Hop / Grime Act - Professor Green
Best International Act - Eminem
Best Reggae Act - Gyptian
Best Album - JLS, 'JLS'
Best Video - Tinie Tempah ft Labrinth - 'Frisky'
Best UK Act - JLS
Best Song - NDubz FEAT. Mr Hudson - 'Playing with Fire'
Best African Act - K'Naan
Best Jazz Act - Empirical
Best Gospel Act - Guvna B
Lifetime achievement award - Billy Ocean
BeMOBO - Merseyside Dance Initiative