Unlike the Herald and Vitesse, the body is one complete welded unit. Also like the Herald/Vitesse it can suffer from rust in many places. One place that is often the first, especially if there has been water leakage, is the floor underneath the front seats. Floor panels (handed) are widely available. Mine were “Steelcraft” from Taylor Pressform in Leamington Spa, which are now distributed exclusively by British Motor Heritage Limited (see illustration below). BMH was established in 1975 to support owners and the marketplace by putting genuine components for classic British cars back into manufacture, using original tools wherever possible. Their panels are widely available, so are cheaper non BMH ones, so beware! I bought my floors from Taylor Pressform direct (with the help of John Kipping, in 1980/81) but I now get genuine BMH panels from my local supplier James Paddock, but there are other ‘approved specialists’.
The new floors can be seen seam welded in place (below):
The second area most likely to suffer from rust is the sills (or rocker panels in the US). These are load bearing as the chassis does not have the outriggers of the Herald/Vitesse. Below is the state of mine in the area just in front of the rear wheel arch (in fact both the sill and rear wing were corroded)!
The sills are in 3 parts as in the table below (from BMH):
