That nice man from Amazon just dropped a package through the letter box. Though ordered on Wednesday, it had come all the way from Hong Kong by Saturday. Very impressive. The package contains an intelligent battery pack that can act as a UPS (Uninterruptible Power Supply) for the Raspberry Pi known as "peregrine" which runs the Gorse Fox's private blog. He will test it all out on "tawnyowl" first but assuming it works that will provide power for breaks in the main electrical supply for 12-16 hours... and certainly long enough to allow the system to be closed down gracefully.