Integrated bat boxes, which can be incorporated into walls, are favoured as they offer an opportunity in perpetuity, do not require maintenance and are designed to be discrete in-situ.
In general, bat boxes should be sited on a tree or building, between 3m and 5m above ground, in a sunny position facing between south-west and south-east. They must be protected from artificial light sources/light-spill, and it is best practice not to site them above windows or doors. Long-lasting woodcrete/woodstone (or similar) materials are good. If siting on a tree, it is good to put them in groups of three, with a mixture of designs, facing in slightly different directions to create a variety of microclimates.
Example integrated boxes:
Example external boxes:
Schwegler 1FR Habibat bat box 001
Integrated bee bricks provide opportunities for solitary bees. They should be sited in a warm sunny spot, ideally south facing at a minimum height of 1m above ground level with no vegetation obscuring the entrance.
Beetle banks are 2m wide banks which support tussocky vegetation and provide an opportunity to encourage predatory insect numbers which can help with pest control.
See How to create and manage beetle banks (RSPB) for further information