They are equipped with Metcalfe-Oerlikon air and vacuum brake equipment
A Davies & Metcalfe Limited advert from July 1961. It notes that 50 of these Type 1 1000hp locos were now in service and that a further 78 were under construction.
This advert appears in the following categories: Traction: Class 20 ; Supplier: Davies & Metcalfe ; Component: Brakes