ATTENTION at 4:55 : It's actually a GX16-4 connector. If you know any more about these connectors let me know - some suppliers list them as DIN connectors but I can't find any official spec.
Farnell part numbers for the parts -
2444686 - MULTIPURPOSE ENCLOSURE, ABS, BLACK
1777967 - TRANSFORMER, 30VA 115-230V 2X 18V
9521615 - CONNECTOR, INLET, IEC, FUSED
1269027 - CABLE GLAND