Cloud Bubbles

I love clouds and could take pictures of them all day, but don't think I've ever seen this type of formation before:-)  Anyone know what they might be called?  

Another day of not going out, but don't think the "cold" is going to come to much.  It was more a case of waiting in for various people to arrive.  The alarm service engineer between 10 am and 5 pm (so of course it was 4.45 pm when he came!)  Then an electrician to give us a quote (he turned up at 7 pm, but at least he came - a couple of others didn't even bother!)

I'll be glad when all this redecoration etc is complete:-)