The front braking system was modified in 1950 from the original wedge front brake arrangement (with hydraulic expanders) to a more modern setup (with hydraulic cylinders).
The change was introduced from the following chassis numbers:
- MkVI – from B1GT
- Silver Wraith – from WME1
- Silver Dawn – from SCA1
Our good friend Norman Geeson has written a number of highly informative articles on these braking systems and these can be viewed here.