Where is the fuel cut off for ford fiesta 1.25 zetec 2000 model?

There isn't a single, easily accessible "fuel cut-off" switch like you might find on some larger vehicles or machinery on a 2000 Ford Fiesta 1.25 Zetec. Fuel delivery is controlled electronically. To stop the engine, you turn the ignition key to the "off" position. This interrupts the electrical signal to the fuel pump and ignition system, stopping the fuel supply.

If you're looking to disable the fuel supply for safety or other reasons (e.g., repairs), you'd need to disconnect the fuel pump's electrical connector or, more drastically, the fuel pump itself. However, this should only be done by someone experienced with automotive repairs, and with the engine OFF. Incorrectly disconnecting or working with fuel lines can be extremely dangerous due to the risk of fire and fuel spills.