92044 Couperin & 86401 Mons Meg DIT, 1S26, Preston, Wed 29 March 2017 - 0323.  An unusual lash-up on the 2350 Euston - Edinburgh / Glasgow lowland Caledonian Sleeper.  86401 was returning to Scotland for its normal Sleeper ECS duties.  It had worked the previous night's 1M16 after 92023 failed before departure on 1M11 and had to be replaced by 92010, which should have worked 1M16.
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