You do have Marina/Ital disc brakes fitted.
The brake calipers should be fitted to the rear of the swivel and not to the front as shown in your photos.
Fitting the caliper to the rear of the swivel means that both the flexible pipe and metal pipes are routed correctly.
New Marina/Ital calipers have different pipe connections.
If you have the calipers fitted as shown above - a new say L/H caliper will only suit the R/H position.
It is possible to remove the calipers and mounting brackets and fit the calipers to the correct side.
Below is a photo of how the Marina/Ital disc brake set up should be fitted - note the run of both the flexible and metal pipes.
The Marina/Ital flexible/metal pipes have UNF threads so the original Minor flexible pipe with BSF threads cannot be used.
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You appear to have the SPAX tele damper kit fitted. The bracket/clamp is correct but those clamp bolts are not suitable for the job. They should be proper bolts of at least 8.8 tensile strength. The inner end of the damper mount is secured by the bolt that clamps the thick/thin arms together. There should be spacers between the two clamp faces.
The clamp bracket holds the outer end of the damper mount hard against the indented rear face of the thick suspension arm as there is no other way of holding the outer end of the damper mount in place. It is an improvised damper mount but it does work and is no better or no worse than the improvised bottom tele damper mount fitted to later Morris Itals by B.L.