Some locomotives in the 'sectorised company' pools received Transrail Freight logos or Mainline Freight 'Rolling Balls' over their 3TG (three tone grey) colours, while Loadhaul locomotives were painted orange and black and Mainline locomotives received 'aircraft' blue with silver stripes. Departmental locomotives were initially painted in a plain grey livery, but this didn't find favour and was modified into 'Dutch' grey and yellow livery, similar to that of Nederlandse Spoorwegen. 37 093 was mocked up as a "police" locomotive which pulled over a Class 43 HST power car for speeding in an InterCity 125 advert broadcast in the 1980s.