I am planning to be at Hope Gap at Seaford Head / Seven Sisters in September for sunset and astrophotography shoot. The week of 14th - 18th September there will be a new moon (little light from the moon) which is great for astrophotography. Sunset is around 7 pm for the week and moonset, what little of the moon is visible, is about 30-minutes later. The galactic centre will be visible from 9 - 10 pm. To top it off low tide is around 6:30 pm by the end of the week.
If anyone else is interested in joining me then respond below.