I wrote to NO had same reply, I expect you asked same question which was answered
correctly to the letter.
But
"I can confirm that Dover District Council did not ban the helicopter rides during Deal regatta week and has no wish to do so at the present time. The Council is, however, continuing to work with the company and event organisers in order to try and ensure that noise impact from helicopter rides at events is minimised as far as is reasonably practicable"
In a week