Just removed my front seat and sub frame to get re-upholstered and took the opportunity to inspect the floor underneath.
The 2 centre cross members on the passenger side (LHD car) have rusted through where they were welded to the floor.
Looking underneath the car there is no sign of this because the original 1/4" thick underseal is still very much intact.......and extremely difficult to remove.
The front cross member has only rusted from the floor upwards so not a big problem. The rear one appears to have rusted
from the inside of the car spreading into and through the floor.
Not the ideal start to the new year.