The "Whitley Mk VII" was the final variant to be built. Unlike the other variants, it was developed for service with RAF Coastal Command and was thus furnished for maritime reconnaissance rather than as a general purpose bomber. A single Whitley Mk V, "P3949" acted as a prototype for this variant. A total of 146 Whitley Mk VIIs would be produced, additional Whitley Mk V aircraft would be converted to the standard as well. It had a sixth crew member to operate the new ASV Mk 2 radar system along with an increased fuel capacity for long endurance anti-shipping missions. Some Whitley Mk VII were later converted as trainer aircraft, featuring additional seating and instrumentation for flight engineers.