What could cause electric windows, sunroof and boot not to open?

Many thanks for your assistance. I checked the fuses and found one had blown - once I replaced it the windows and sunroof magically came back to life! Feel a bit of an idiot for not doing this ages ago. The engine warning light still stays on so I'll need to do a bit more digging on this problem.

Excellent, it's so nice when everything just works! The dreaded VW check engine light is normally a quick fix, just have a code reader plugged in at an auto parts store and let me know what the code is. Don't let them sell you parts until you diagnose the issue. I can walk you through it.

Bit of a relief with the fuse change - my poor missus has been baking in the recent hot weather cos she's the usual driver. Thanks for the tip on the engine waning light. I'll ask at my local garage where we get the MOT and repairs done for the code. Failing that Halfords is close by. Once I know the code we can see what to do next. Much appreciated.