Singer Sonu Nigam, who was due to perform at London's O2 arena Sunday, is disappointed after he had to cancel his visit following visa issues.

Nigam was due to share stage with Pakistani singer Atif Alsam at Dhamaka Bollywood Concert London 2012, but had to pull out after his group members failed to get visas.

"Disappointed and enraged to inform everyone that I'm not coming to London. Hard to believe that except my visa, not a single visa for my group was done. Never happened in 20 years of overseas travel, " Nigam tweeted.

"Don't know whom to blame. Our entire team's time and repute has been wasted. Only if the show is postponed now to another date, would we be vindicated. Prayers everyone, " he further posted.