All airport operators have to show respect to their neighbours in this modern age & at the very least engage & attempt to mitigate noise issues & act responsibly & be seen to act responsibly.
SEN being a constricted site when it comes to very well established residential areas surrounding it & being unused to night jet movements would have due cause to heed.
LTN has been pointed out as one example & MAG/STN surrounded by fields (lots & lots) according to some views has taken these issues most seriously & delayed seeking further expansion until representation from the local regions was listened too & acted upon as far as possible.
STN has an excellent web track facility for the public too to view any potential noise infringers.
SEN will do well to listen to locals very carefully if only to draw the attention away nationally from night time ops which are increasingly becoming more & more restrictive.