There is probably nothing more frustrating for a press photographer than when one of their great images fails to make it into print or online.

But sympathetic to their plight, the British Press Photographers' Association has published a new book called UNSEEN which contains those shots yet to grace a publication.

The 108 pictures in the 176-page book were selected by a jury of BBPA members and offer an insight into the standard of photos that don't make it into a final product.

They feature shots taken by local, agency and national press photographers.

The first in the gallery below is by Simon Dack, a staffer with Brighton daily The Argus, and the second is by Press Association photographer Lewis Whyld.

While working for the South West News agency in 2003, Lewis took a famous photo of Concorde over the Clifton Suspension Bridge, in Bristol, from a helicopter which was shadowing the flight.

The agency was swamped with requests for the image which was used in newspapers across the planet.

The book costs £19.95 and is available from Skateboarding Duck. Below is a selection of the book's images.