If you use this link to the airport's website you will find minutes available from quarterly meetings between the airport and local politicians regarding a range of community matters including noise.
I think it shows that the airport does engage, but as has been reported in the press, there is a view from the management that people should be content provided it is explained to them that airport operates within permitted limits.
https://southendairport.com/corporat...ity/noise#faqs
Go to Community Reporting for the minutes.