John Lewis in the UK now have stock of the 10th Gen models in case anybody is still looking for one. Two year warranty too...
Thanks.
I didn't order through Apple until last weekend, so was still stuck on processing and had a delivery date of the 27th. It would probably have come quicker than that, but now have a guaranteed delivery date of Sunday with John Lewis. Cost me an extra £6.95 for that delivery, but well worth it if only to stop the constant refreshing of the Apple Order status.