Nadeem Saifi (of Nadeem-Shravan fame) has split up with partner Shravan Rathod and shuttles between Dubai and London. He left India following the murder of music tycoon Gulshan Kumar (in 2000) wherein he was the key accused.
In 2002, a British judge ruled that the case against him has not been proved.
However, his arrest warrant has not been withdrawn.
In February 2011, Pakistani singer Rahat Fateh Ali Khan was detained at the Indira Gandhi International airport in New Delhi by revenue intelligence officials after he and two of his troupe members were caught allegedly carrying US $1.24 lakh in undeclared foreign currency.
After that, he never visited India.
Interestingly, Nadeem and Rahat have collaborated for a song in Shabbir Boxwala's upcoming film Ishq Forever. 
Nadeem had signed up as the film's music director in August last year.
A source close to the film says, "It was Boxwala's idea to bring Rahat and Nadeem together. The two had never worked together before."
As soon as Rahat came on board, Boxwala flew to Dubai for the recording. Both, Rahat and Nadeem, spend a large amount of time in Dubai.
The song, which goes 'Bilkul socha na tha', was recorded in two days.
Ishq Forever is Vidya Malavade's husband Sanjay Dayma's directorial debut.
Boxwala told SpotboyE.com, "The Rahat-Nadeem song has turned out fabulous."