The problem began with the alarm randomly sounding. In addition to this the doors unlocked themselves and the driver side window kept opening and closing.
This is down to a fault in the driver door. Apparently the replacement parts have a design fault so BMW Germany need to rectify this and ship the working parts to the UK (no lead time available at present).
Has anyone else had a problem with the driver door? This has affected a friend of mines mini and I'm a bit worried about the fault happening to mine/others.