UK Penny die errors

Here are some die errors I have found this week while noodling bags of 1p's.

Thanks Merv

I think the first one is not a die error but rather from heating the coin and expanding gas between the copper and steel like this one:

Can you poke one of the blisters and deform it?

I'd rather not damage the way it looks at the moment. I'll just leave it as it is.