Wet carpets, dry ccm, central locking & electric problems

[JA1987]

Hey there you lovely lot,
Ive got an issue with my wagon and im hoping you can help. The rear passenger side carpet is very wet and I think its coming through the door. Now onto the other faults;
- the rear passenger door was working fine this morning but is now not locking/unlocking from the fob or when using the key in drivers door.
- The puddle light doesnt work (ive swapped the bulb for a known working one and still nothing)
- The electric window doesnt work from the drivers switch (havent tried from the rear passenger door)

So basically all power is lost to the door, any ideas?

Cheers
James