At the time of writing Crewe is one of the bidding rail centres hoping to become the home of Network Rail's replacement GBR. I am not sure if Rail House forms part of their bid but it is certainly a feature of Crewe's skyline and one that is familiar to many a rail enthusiast over the years. Indeed, it features in one of my photographs taken back in 1977, see....
https://www.ontheupfast.com/p/21936chg/23615827404/x47501-24036-24073-crewe-diesel-depot At the present time, it does not appear to be used very much and there have been some grand plans to turn it into flats that have been rejected by the local planning authorities.