Leave a Dark Garden Edge

myAudience · AI-generated garden illustration · Original generated illustration; not documentary evidence
A dark edge can be a deliberate part of the garden plan. Keep necessary access safe while allowing a hedge or planted boundary to meet the evening without decorative floodlighting. Look at the space from indoors as well as from the path.
The RHS advice on British bats emphasises habitat and insect food. Local bat species and surroundings determine what a garden may support. Bats and their roosts have legal protection; do not inspect, handle or alter a suspected roost without qualified advice.
For new lighting, use competent installation and current wildlife guidance to decide where light is necessary and how it can be limited. There is no reason to add a bright lamp simply to watch flying animals.
Sit quietly at dusk and notice the whole scene. A bat may pass, or the garden may remain still. Preserving a quieter edge is a useful design choice without promising a sighting.