sleeper coaching stock between London Euston and Wembley Intercity Depot, as well as between Glasgow Central and Polmadie TRSMD, along with 86101. After a lengthy refurbishment, 86401 joined the Caledonian Sleeper fleet on 8 August 2015. In October 2019, the 87 and 86s were withdrawn, primarily due to coupler incompatibility, and returned to the AC Locomotive Group. Export to Bulgaria In 2006, Singapore trading company Romic-Ace International PTE Ltd approached Porterbrook to discuss the potential export of the Class 87 locomotives to a customer in eastern Europe. 87012 and 87019 were purchased and sold to BRC, an open access operator in Bulgaria by Romic-Ace after preparation for export by Electric Traction Services Limited (ETS). The transfer did not take place until after Bulgaria's accession to the European Union the following year to minimise customs formalities. Following successful trials and homologation by the state railways, a further 25 locomotives (the entire fleet, minus four (+ 87101) that had been scrapped, two already in Bulgaria and the four locomotives preserved or staying in the UK) were purchased from Porterbrook by Romic-Ace and sold to the Bulgarian Railway Company (БЖК/BRC) in seven batches with the refurbishment being carried out by ETS at Long Marston. The locomotives were then moved to Crewe for 25 kV testing and sign off. The project involved the supply of the locomotives, spares, drawings, overhaul documents and the provision of driver/staff training, which was provided by ETS in the UK and Bulgaria on behalf of Romic-Ace. The locomotive batches were scheduled to be exported in stages over 2008 and 2009. The first batch, locos 87007, 87008 and 87026, were prepared by ETS and left the UK in June 2008 after testing and sign off by Romic-Ace and BRC at Crewe. The locomotives were delivered by rail via the Channel Tunnel. Subsequent batches of locomotives have been delivered by road to Hull, then ferry and barge to the port of Ruse in Bulgaria. Seventeen locomotives are in service with Bulgarian Railway Company. A downturn in traffic in Bulgaria meant that the export deal was terminated in 2009, leaving 11 locos "in limbo". While those locomotives deemed to be in the worst condition (87011, 87018, 87021, 87027, 87030, 87031 and 87032) were sent for scrapping in 2010 and 2011, the four remaining Class 87s (87009, 87017, 87023 and 87025) were the property of operator Europhoenix. The firm made preparations for the