Cross-border problems mean that the party to celebrate the music of ‘Cocktail’ will now be held in London and not here in India. The songs of the Saif Ali Khan, Deepika Padukone and Diana Penty starrer ‘Cocktail’ have become chart toppers in a short time. So the makers of the film decided to have a party to celebrate. However, four Pakistani artists — Imran Aziz Mia, Javed Bashir, Arif Lohar and Sahir Ali Bagga — who have sung for the film were denied Indian visas. Deeming it unfair, the producers of the film Saif Ali Khan and Dinesh Vijan have decided to host the party in a neutral venue to ensure everyone can join in. The date for the celebration has not yet been fixed.