On weekdays the locomotive that works the sleeper from London Euston to Edinburgh Waverley is employed on a 'fill in' move whilst awaiting to work the southbound sleeper later in the day. The loco works 6M49 0937 Millerhill SS-Carlisle NY & 6S50 1305 Carlisle NY-Millerhill SS departmental services.
Here 90036 is pictured between Crawford & Abington in the Scottish Borders working 6S50 1305 Carlisle NY-Millerhill SS on 04/03/2005. On this day the service comprised a trainload of continuously welded rail.