The Wildlife Trust along with RHS and Bat Conservation Trust have produced a fantastic booklet about bats and what you can do to help them. There are lots of useful tips about making your garden more wildlife friendly to attract these amazing creatures.
There are over 1300 species of bat in the world, 17 of which are found in the UK and many of these can be seen flying above London, so why not give a helping hand to these protected species.
Nature Conservation Lewisham 