These beautiful and harmless creatures are Britain's largest insect but sadly they are in decline. We keep chopped up logs in the garden which are a haven for wildlife and attract creatures like beetles to feed on. They also attract interesting animals like woodpeckers who come to feed on them.
http://ptes.org/campaigns/stag-beetles/stag-beetle-facts/
There is a campaign at the above link to report stag beetles if you find them. I just sent them a report for a few in our garden. Including the very shy female below.
This male was from last year but he posed so handsomely for the photo I felt I should include him here!