Are all the scanners the new ones or are there still old ones in use? Until everything is upgraded, staff trained, etc., they have to stick to the "old" rules. The new rules were supposed to be in place by this summer, but there are delays. LHR and LGW aren't ready (things like floors needing strengthening to accommodate the weight of the new machines), so unfortunately I'll still have the hassle this summer (not just liquids but the rigmarole of having to unpack the myriad electronic devices).