The Times page 6 today lists the exercises performed by the King each day. More evidence for my theory that 'lay' is supplanting 'lie' in some contexts.
Lay on back with feet apart...
Lay on front, raise head...
Lay on front, straighten arms...
To be fair, this is not directly Times journalism, as the exercises were devised for the Royal Canadian Airforce.
Perhaps North American English approves of 'lay' in this context?