Yes I do really like their self checkout too. Just throw 12 items in the box, quick check and recap but everything was recognized. Pay by card and leave. Its the only self checkout I've experienced which don't make me angry :)
In the UK I've noticed some items having 2D barcodes instead of 1D ones lately. Of course, all the scanners have been able to read them all for years now. They're not all QR codes, though. Other 2D barcodes exist.