 As development had progressed, it became clear that the radar would not necessitate as bulky an antenna as initially believed, which had the result of freeing up considerable internal space.In response, the RAF began to concentrate on a secondary bombing role for the type, for which it was to carry both the radar along with a long bomb bay, in which either a weapon or additional fuel could be contained within.A high-speed bomber requirement was also being studied at the time, OR.336, so the two projects were combined into the new RB.156 requirement in October 1955.