I have found that the left Airpod doesn't always connect though — The right is always fine but sometimes I have to put them both back in the case, then put the left one in first in order to get them both working…
O2 don't have any in stock to replace them, so I'm getting a refund and I'll try and pick some up elsewhere, or wait until the next version comes out, hopefully with better features and a bit more reliablility.Shortly after posting this, the left AirPod stopped working all together. I've tried everything suggested online regarding 'rebooting' them but nothing is working. I think it's dead. So now I'm waiting to hear back from O2 about a replacement.
I'd of returned them via and Apple shop you have had more luck.
iJustine had a set of straps. She still managed to lose them!