Swift Gas Locker

Hi All I have a 2018 year swift caravan When using in the high winds we had recently I noticed draughts coming in around front corner & front roof light My dealer says that all Swifts are like this it is coming from the Gas Locker Gas regulations say that Gas locker should be sealed from living area which is not the case with Swift i don't know about other makes I have spoke to gas Safe who state that gas lockers that are not accessible from inside the vechile must be sealed To me sealed means sealed Swift state that they allow air flow to stop condensation

Are there any gas sae engineers here who would like to comment?? My dealer has told Swift they have inspected the van & can find no issues I asked who is their gas safe registered engineer & they stated they don't have one

How can someone not gas safe registered state my van is safe  My point is yes there are gas drop out vents but if it windy & I had a gas leak it would be blown back into the caravan