In June 2009, DRS commenced operating rescue locomotive duties on the Great Eastern Main Line for National Express East Anglia as well as hauling Class 90 electric locomotives from Norwich to Great Yarmouth on summer Saturdays. This included Summer Saturday Wherry Lines services. DRS have periodically operated services on the Wherry Lines during periods of diesel multiple unit shortage. In October 2014, it commenced operating a two-year contract to operate services on the Wherry Lines under contract to Abellio Greater Anglia. It was operated by top and tailed Class 47s hauling Mark 2s, top and tail Class 37s were introduced in mid-2015.