From what I gather, except for what Raza1 has shared, everyone is basically telling what is best exported from Pakistan. No doubt, masalas, basmati rice, surgical and sports goods, leather products, fresh fruit particularly mangoes, decoration pieces of onyx like at Pakistan Handicrafts, etc. top the export list, what you need to hunt for is, someone in the UK to tell you what is required from Pakistan. You might like to Khawer at 03335535654. He's in Pakistan these days from the UK and is mostly in this trading business.