As a result of the development of the new HS2 station on the site, GWR phased-in a closure programme for its 125 Intercity Fleet depot. In December 2017, maintenance of the "Night Riviera" was transferred to Penzance Long Rock Depot with the stock laying over at Reading TMD at its northern end. The last HST to run from Old Oak Common ran from OOC to London Paddington station on 8 December 2018. A headboard was attached to the front power car, 43093, which said: "81A Old Oak Common LAST HST 8th December 2018". 43093 had already been named "Old Oak Common HST Depot 1978-2018" and was in the Legends of the Great Western Railway livery, but even more was added on this date; a logo which read "Old Oak Common History Makers" and another sign which read "Last HST off Old Oak Common Depot 8th December 2018".