We found this rather large beetle on the bedroom floor a few weeks back, which was a bit unexpected. However it seemed to be on its last legs and by the look of it was a bit gunged up with spider web and carpet fibres. I can't make up my mind whether it's a stag beetle or lesser stag beetle, though it's definitely a female. There are some decent pages out there trying to help in making this identification, but it's still not quite clear to me. If I had to put money on it I'd go for lesser stag, because it's very black and seems to have some sort of ridges on its forelegs. I wish I'd paid greater attention to the size at the time!