Recently during low speed in 1st just before I have to stop (junction/roundabout) when I dip the clutch the car revs drop and the car stalls, this isnt happening all the time just a few times in the last few weeks, what could be causing this?

Is the car modified at all?
Does it cut out at al if sat idling?

The car is not modified at all, just a standard 1.2 8v Punto ELX, it has cut out 1 or 2 times while sat in neutral, but thats like once or twice in 2mnths, just recetly it cuts out when I dip the clutch in first gear.

I'd be inclined to clean and tighten the battery terminals (use a little silicone grease) and the earth leads in the engine bay.