AceShowbiz - Nicki Minaj's plans for a promotion-packed night in London this week were marred when a brawl broke out as she arrived to perform at a club in the U.K. capital. The hip-hop star is on the British leg of her European promotional tour and thrilled fans by announcing surprise appearances at two nightspots in London on Thursday, January 20.

Minaj's evening got off to a good start as she greeted fans at the Oceana club, but when she arrived at trendy hotspot Runway, a fight broke out in the crowd outside the venue. According to sources, the star's car circled the club several times before leaving.

In a post her Twitter.com page, Minaj wrote, "Had a blast @ Oceana! Security issues r now preventing us from entering Runway..." As WENN went to press it was not known whether Minaj managed to return to make her appearance at Runway following the disruption.

Minaj's trip to London has already been rife with problems - bosses at the posh Dorchester hotel have threatened to throw the star out because of the huge number of fans blocking the entrance in a bid to meet her.