Departmental
| Original number | 2nd TOPS number | Parcel number | Department number | Usage |
|---|---|---|---|---|
| 50015 | 53015 | 55929 | ADB977775 | ATP Test Unit |
| 50036 | 53036 | - | 977769 | - |
| 56015 | 54015 | 54904 | 977776 | ATP Test Unit |
| 56027 | 54027 | - | 977770 | - |
ADB 977775/6 were converted into an Automatic Train Protection demonstration train and fitted with both types of ATP systems from the BR pilot schemes c1991. Following the abandonment of ATP development, the unit found a new lease of life with EWS as a route learning and inspection saloon based initially at Margam South Wales
Read more about this topic: British Rail Class 114