Yes, I had downloaded the current version before all this started. The two re-installs I've done are within the last 24-hours and are the latest version. I have checked on my wife's PC that all is OK on the website itself (and it is) and that she is not only able to download the CCleaner updates but also the links on the page to Piriform i.e. the green pear in the top right-hand corner and the CCleaner logo in the top left - neither of which work on my computer. We both use the same operating system (XP) and other sites which offer updating seem to work on my PC.
Warmest regards and grateful thanks for taking the trouble to respond - Peter