It has specialised in industrial railway management, infrastructure maintenance, and rolling stock leasing; one major customer was its former sister company and rail freight operator DCRail.
[3] RMS Locotec has been involved in track maintenance work, such as on behalf of the Manx Electric Railway; these activities include design, procurement, installation, repair, inspection, and technical consultancy.
During January 2018, it announced that it was putting all of these locomotives up for sale, reportedly as a consequence of the pending closure of Washwood Heath depot to make room for High Speed 2 construction works.
[9][10] During the sales process, both 56091 and 56103 were obtained by DCRail to facility its continued operations, while the remainder of RMS Locotec's Class 56s were sold to the spot-hire company UK Rail Leasing.
[13][14] During June 2020, a deal was reached for its sale to the consortium Proviso Holdings, which also operated Eastern Rail Services, along with 20 Class 08 locomotives;[15][16] the move was hauled as bolstering RMS Locotec's core shunter hire business.