I'd like to know the immigration limit for people who HAND CARRY ( or OBC) to enter CUSTOMS of London. From Shanghai airport : PVG To Healthrow airport : Commodity : IT products Shipment limitation: Weight ?? Quantity ?? Size ?? Invoice value/within : ?? No acceptance:?? (such as : dangerous article?chemical article?food?medical drug ....... ) Document required:how many sets of original Invoice & packing list ?? How many sets of exclusive AWB ??