31105 - Network Rail Yellow - ExclusiveNo. 31105 was the third of Network Rails Class 31s to return to traffic and the only former disc headcode fitted locomotive in the fleet, although it could often be found partnered with Howard Johnstons hired in Fragonset, later BR blue liveried, skinhead No. 31106 on test trains. The former D5523, new to Stratford in March 1959 and withdrawn from Bescot in May 1997, was selected in 2002 for rebirth in NRs QADD pool along with No. 31107. While the