Thanks for the responses. I got the car fairly recently so have a load of service and other parts coming soon including 4 new flexi hoses.

If it were a collapsed hose would that cause boiling of the fluid and the pedal going to the floor do you think? It'd be great if it were a hose as it'd be less work than a jammed caliper.

Mike

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280CE auto in metallic blue (97k miles), bought as a project; converted to 230CE, hopefully ending up immaculate.