The fort is reached through the village of East Tilbury and is signposted from the village. As it is on the north bnak of the Thames, there is a wide variety of aliens, some of which have been present since the 17th Century. Along the sea wall to the south west is abundant salsify, milk thistle and Greek dock (best in late June)along with wild clary.
A patch of blackthorn scrub to the east has a small population of dwarf elder (along with singing nightingales)beside the footpath.
It is the small area of saltmarsh to the south of the fort which is really interesting: the rangers have been creating habitat for saltmarsh goosefoot to the south of a wooden brazier (used in the Millenium celebrations). This area also has a lot of sea barley, Borrer's saltmarsh grass, saltmarsh rush and divided sedge, with bulbous meadow-grass on the scuffed places along the footpath. There is also perhaps the easiest place to find slender hare's-ear with more than 50 plants near a red life buoy on the south side of the horse-shoe shaped lake. Fiddle dock is also tolerated within the municipal grassland on the sea-facing slope to the east of the fort.
For anyone interested in invertebrates, this must be THE place to see rare bees as more than half those on the British list have been recorded there, pollinating the black hore-hound and sea aster.