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.