Beardmore W.B.1a explained

The Beardmore W.B.1a was a British two-seater long-distance bomber biplane of World War I developed by Beardmore. The pilot and observer were seated in the rear of the fuselage, just before the tail section.^[1]

Notes and References

1. Book: Taylor, Michael J. H. . Jane's Fighting Aircraft of World War I . 1990 . Studio Editions . London . 56.