Thank you for all the lovely comments left on the previous post, I have read and enjoyed them all, one of them made me laugh - Parnassus it was you.
Arriving back home we were greeted by these wonderful Cirrus clouds (delicate cloud streaks). They are the highest of all clouds and are composed entirely of ice crystals. Cirrus clouds are precipitating clouds, although the ice crystals evaporate high above the earth's surface. The crystals, caught in 100 - 150 mph winds create wisps of cloud - info from web.