Police SOCO came out to fingerprint the car, which was clean of prints, but she took some fibres from the sharpest bits of metal (which swere presumably from gloves they wore, hence no prints) and some imressions of the scrape marks made by whatever tools they used.
The SOCO woman said that on older cars, if you can get to the wires of the central locking you can short them out, which will energise the locking, unlock the car and switch the alarm off.
The technique they used to (try) to get into the car suggests tht they didn't really know what they were doing, so I guess they were going for contents, rather than steal the entire car.
It just goes to show how car security has moved on, as that's two fairly hefty attempts at getting in, and they've failed both times.