Finally got round to cleaning the autumn muck off the nice summer bike yesterday.   Found the front tyre flat,  which was a bit of a disappointment as I'd fixed a puncture in that just a couple of weeks ago after noticing it was flat.
Couldn't find a puncture at all,  despite immersion in soapy water* so refitted and 24 hours later still hard as a rock.**
The rear tyre,  vittoria corso,  looks rather cracked longitudinally, though not worn which is a bit disappointing.  So ordered a couple of reassuringly expensive Rene Herse tyres. 
* no, not me,  the tube!
** no, not me,  the tyre!