phased out after TDM was fitted across the fleet. Sectorisation of British Rail in the late 1980s, saw the fleet split up again; the 86/2s were dedicated to the InterCity sector for use on express passenger trains, whilst the majority of the 86/4 subclass were dedicated to freight and parcels traffic. As a result, many had their electric train heating isolated and were re-geared to a lower maximum speed of , these were usually operated in pairs on long-distance freight services. These locomotives were reclassified as a new subclass 86/6. Eight Class 86/2 locomotives were also dedicated to freight work and were reclassified as Class 86/5, being renumbered into the range 86501–86508. However, the InterCity sector of BR decided that it wanted these locomotives back, so they were soon renumbered back to Class 86/2s. For a period of one year starting on 10 May 1992, six Class 86/6s were returned to Parcels use. These were renumbered back to class 86/4, as follows: 86405, 86411, 86414, 86415, 86428 and 86431. All six remained in Railfreight's Triple Grey livery. The late 1980s also saw the introduction of many new liveries. The class had previously worn rail blue when built with cast lion-and-wheel emblems, but this was replaced by the standard BR Blue livery from 1967 with a cast-metal double arrow symbol. The first new livery was introduced by the InterCity sector in 1984 with the unveiling of an 'InterCity Executive' livery, with dark grey upper body, tan lower body separated by red and white stripes, with wrap around yellow cabsides and yellow cab roofs. InterCity undertook a rebranding of InterCity Swallow livery in 1987 on InterCity 125s, Class 90s and Class 91s, which were in the final stages of construction. Class 86/4s were still used on a mixed traffic basis on InterCity express trains, parcels, Speedlink and Freightliner traffic, so a modernised version of InterCity livery was used, commonly known as 'Mainline' livery. The red and white stripes and tan bands covered the whole bodyside, and the roof was dark grey. The whole of the ends were painted yellow, although some were repainted dark grey around the front windows. It wasn't until 1990 that the first Class 86 received InterCity Swallow livery, when a full sector ownership was established. The Railfreight sector introduced its new two tone grey livery in 1987, initially without sub-sector logos due to shared operations on speedlink and