It is a condition of operating at London Southend Airport that all aircraft operators accept that St. Laurence Church and its graveyard are permanent obstacles within the runway instrument strip, and that they take account of them to the extent necessary to ensure a safe operation.
That is legal speak for if your aircraft hits the church on a missed approach or for whatever reason don't sue the airport because we have just told you it is there despite it infringing various safeguarding requirements.
Maybe the airport should also get the passengers to sign wavers just before boarding aircraft heading into Southend.