None of the petrol engined Forfours have a fuel filter that can be changed during a service.
1.1 Petrol - No fuel filter
1.3 Petrol - No fuel filter
1.5 Petrol - No fuel filter
1.5 Brabus - No fuel filter
The fuel filter is part of the fuel pump and it is designed to last the life of the car.
I'm not sure what they class as the car's lifetime but it should outlive the fuel pump itself.
Changing the pump is a very easy task. Tilt the rear seats out of the way and look under the carpet.
You will see a triangle inspection hatch. The fuel pump is underneath this bolted down hatch.
Both of the diesel engined Forfours had a fuel filter.
1.5 Diesel 68bhp - Replaceable fuel filter
1.5 Diesel 95bhp - Replaceable fuel filter
The fuel filter is a large black plastic canister located at the back of the engine bay behind the air box.
You will need to remove the inspection panel and airbox to see it properly.