You can download a comprehensive synonymic checklist of beetles of the British Isles . The checklist includes detailed endnotes, a list of non-established introductions and a list of fossil beetles only found in Quaternary sediments.
The download version is available in two PDF editions (click the first link for the most up-to-date edition):
The latest 2012 checklist is also available as a printed booklet, published by Pemberley Books (Publishing). Further details are available on the Pemberley Books website www.pemberleybooks.com.