Nightwatch Survey in Aug 2022 found:
Noctule
Common Pipistrelle
Soprano Pipistrelle
Supporting Documents: 'Urban Edge' say: Very low levels of bat activity by a small number of common and widespread species recorded during the surveys completed to date.
Essex Bat Group say that noctule are relatively scarce in Essex, sometimes seen on a summer evening. The pipistrelle are more widespread.
Whether there is low or high activity, common or scarce, bats are protected.
And that's not all, there's the Barn owls