There are records that are broken every few months and then there are records which are tough to beat and take years to be taken out.
One such record is UK lifetime box office, a record was set in 2001 by Kabhi Khushi Kabhie Gham and that was broken 9 years later by My Name Is Khan. Very few films even stand a chance to break the UK record but Jab Tak Hai Jaan is one such film. It is the right genre, has a UK setting and has Shahrukh Khan as main lead who is just competing with himself in UK.
The UK market has struggled in the last few years and basically if Jab Tak Hai Jaan does not put up a big number it means others don’t stand much of a chance and its really a dead market.
There is also the £3 million mark to breached in UK and if market conditions had allowed it should have been crossed by now because Kabhi Khushi Kabhie Gham in 2001 grossed £2.5 million and eleven years later we are still looking for the £3 million film. The £3 million total is a long shot due to market conditions (piracy and recession) but if any film has a chance it is Jab Tak Hai Jaan.