My daughter kept complaining about driving along a dual carriageway, approaching a roundabout and not being able to select any gears at all, works fine around town and short trips on Motorway / Dual carriageway.

I eventually managed to get it to go wrong for me, as you approach the roundabout, you brake and then try to go down through the gears there is no pressure on the clutch peddle to enable gear selection, I managed to tease it into third gear whilst still rolling along and it was fine after that, my daughter cannot do this and has to come to a complete stop, to off the engine and re-start it and the clutch works fine.

She has been told its the DMF but I am not convinced as it also has this awful dual brake & Clutch Master cylinder (is there a biased system on the pedals to always defer to the brake working rather than the clutch if there is a potential problem)

The fact that the gear-change is fine round town, clutch doesn't drag at all leads me to believe that it is more of an electrical / sensor fault to do with this awful dual system!