Having sorted the breakdown cover out, feeling pleased with the outcome, I offered to take her for a monster shop at Lidl and next door Tesco, to fill the boot. That, after a great BBQ. Then we slept in the caravan, in the drive, with the door open - much cooler than in the house.
Today, we have been extending the automatic watering system, replacing the temporary system along the very back of the garden, using narrow leaky pipe, holes pearced in, where water was needed. That seems to be working OK, I wasn't sure there would be enough pressure and flow, it's a long way 70m and slightly uphill.