Mr Rails' Workshop is where the trains get fixed up and where Mr Rails invents things. It's located at the beginning of Jubilee's line.
There are three tracks leading into the workshop, all with buffers at each end. On the left, there is a work bench, filing cabinets and wash basin, while on the right, there is a pillar drill and a viewing area with magnifying glasses to take a look at things. Outside is a crane that Mr Rails uses to hoist his Multi-Tooled Maintenance Machine when carrying out repairs on it.